Browse by category.

Accept vs. Except

To receive or welcome versus to exclude — near-opposite meanings.

Affect vs. Effect

The action versus the result — a verb and a noun most of the time.

Then vs. Than

Time versus comparison — two different jobs, one letter apart.

Imply vs. Infer

The speaker implies. The listener infers.

Alright vs. All right

The casual one-word form versus the two-word form editors prefer.

Enormity vs. Enormousness

Great wickedness or moral weight versus sheer physical size.

Bemused vs. Amused

Puzzled and a little lost versus entertained and pleased.

Disinterested vs. Uninterested

Having no stake in the outcome versus having no interest at all.

Hanged vs. Hung

The past tense reserved for executions versus the one for everything else.

Piqued vs. Peaked

Stirred up (as in curiosity) versus reaching a high point (as in mountains).

Adverse vs. Averse

Harmful conditions versus a feeling of opposition.

Advice vs. Advise

The recommendation itself versus the act of giving it.

Allowed vs. Aloud

Permitted versus out loud.

Allude vs. Elude

To refer to something indirectly versus escaping or avoiding.

Allusion vs. Illusion

An indirect reference versus a deceptive appearance.

Altar vs. Alter

One is religious, the other means to change.

Alternate vs. Alternative

Switching back and forth versus a different choice.

Alumni vs. Alumnus vs Alumna

Correct Latin plurals for graduates.

Ambiguous vs. Ambivalent

Unclear meaning versus having mixed feelings.

Amend vs. Emend

Changing for improvement versus correcting a text.

Amoral vs. Immoral

Lacking a moral sense versus violating moral principles.

Apportion vs. Proportion

Assigning shares versus a relative part of a whole.

Appraise vs. Apprise

Valuing something versus informing someone.

Ascent vs. Assent

Climbing upward versus agreement.

Baited vs. Bated

Using a lure versus holding your breath.

Bare vs. Bear

Uncovered versus the animal or to carry.

Base vs. Bass

The bottom/foundation versus low-frequency sound.

Bated vs. Baited breath

Holding your breath vs Fish hooks.

Bazaar vs. Bizarre

A marketplace versus something very strange.

Board vs. Bored

A flat piece of wood/group of people versus lack of interest.

Born vs. Borne

Being brought into life versus carried/supported.

Brake vs. Break

Stopping a vehicle versus shattering or a rest.

Breach vs. Breech

A break in security/contract versus the back of a gun or a birth position.

Bridle vs. Bridal

Horse gear/control versus wedding-related items.

Buy vs. By vs Bye

Purchase versus proximity/agent versus farewell.

Cannon vs. Canon

A large gun versus a collection of rules or official works.

Canvas vs. Canvass

A heavy fabric versus a survey of opinions.

Capital vs. Capitol

A city/wealth/uppercase letter versus a physical building.

Cavalier vs. Cavalry

Showing lack of concern versus soldiers on horseback (or help).

Censor vs. Sensor

To suppress speech versus a device that detects input.

Cereal vs. Serial

Breakfast food versus a sequence/recurring.

Chord vs. Cord

A musical note group versus a thin rope/cable.

Cite vs. Sight vs Site

Referencing versus vision versus a location.

Climactic vs. Climatic

Related to a climax versus related to the climate.

Coarse vs. Course

Rough texture versus a path/class.

Collaborate vs. Corroborate

Working together versus confirming a story.

Complacent vs. Complaisant

Self-satisfied versus eager to please.

Complement vs. Compliment

To complete or enhance something versus to say something nice.

Conscious vs. Conscience

One is about awareness, the other about morality.

Continual vs. Continuous

Happening frequently versus happening without interruption.

Council vs. Counsel

A formal group of people versus advice or a legal representative.

Credible vs. Credulous

Believable versus being too ready to believe.

Criteria vs. Criterion

The singular versus plural form of a standard.

Currant vs. Current

A small dried grape versus flow of water/electricity or 'now'.

Defuse vs. Diffuse

To remove a fuse (de-escalate) versus to spread out.

Deprecate vs. Depreciate

Disapproving/phasing out versus losing monetary value.

Desert vs. Dessert

Dry sandy wasteland versus the sweet course after dinner.

Discreet vs. Discrete

Subtle/private versus separate/distinct.

Dual vs. Duel

Having two parts versus a formal fight.

e.g. vs. i.e.

For example versus that is.

Elicit vs. Illicit

To draw out a response versus something illegal.

Emigrate vs. Immigrate

Leaving a country versus coming into one.

Eminent vs. Imminent

Famous/distinguished versus about to happen.

Empathy vs. Sympathy

Feeling 'with' someone versus feeling 'for' someone.

Enquiry vs. Inquiry

The act of asking versus a formal investigation.

Ensure vs. Insure

Making sure versus financial protection.

Envelop vs. Envelope

To surround something versus a paper container for mail.

Exalt vs. Exult

To praise or raise in rank versus to rejoice.

Extant vs. Extent

Still in existence versus the scale of something.

Facilitate vs. Felicitate

Making something easier versus congratulating.

Flare vs. Flair

Bursting into flame versus a natural talent.

Flaunt vs. Flout

Showing off versus ignoring a rule.

Forgo vs. Forego

To go without versus to go before.

Forth vs. Fourth

Forward versus the number 4.

Gait vs. Gate

A manner of walking versus a movable barrier.

Grisly vs. Grizzly

Horrible/gruesome versus a type of bear.

Hear vs. Here

Auditory perception versus this location.

Heard vs. Herd

Past of hear versus a group of animals.

Hoard vs. Horde

A hidden stash versus a large crowd.

Hole vs. Whole

An opening versus the entire thing.

Homogenous vs. Homogeneous

A biological term versus a term for uniformity.

Hour vs. Our

Time unit versus possessive of 'us'.

In Front vs. Infant

Positioned ahead versus a very young child.

Instance vs. Instants

An example/occurrence versus short periods of time.

Isle vs. Aisle

Island vs walkway — both silent first letters.

Knew vs. New

Past of know versus recently made.

Knight vs. Night

Warrior in armor versus time after sunset.

Knot vs. Not

Tied rope versus negation.

Lead vs. Led

The metal or present tense verb versus the past tense of 'to lead'.

Lessen vs. Lesson

To make smaller versus a period of learning.

Lightening vs. Lightning

Making something lighter versus an electrical discharge.

Loath vs. Loathe

Reluctant versus hating something intensely.

Loose vs. Lose

Not tight versus to misplace or be defeated — very different meanings.

Manner vs. Manor

A way of doing something versus a large estate.

Mantel vs. Mantle

A shelf above a fireplace versus a cloak or responsibility.

Marshal vs. Martial

Organizing/an officer versus relating to war.

Mettle vs. Metal

Strength of character versus a chemical element.

Naval vs. Navel

Relating to a navy versus a belly button.

Ordinance vs. Ordnance

A local law versus military weaponry.

Palate vs. Palette vs Pallet

Taste/roof of mouth versus a color range versus a shipping platform.

Passed vs. Past

The past tense of 'pass' versus a time before now.

Peace vs. Piece

Tranquility versus a portion.

Peak vs. Peek vs Pique

A high point, a quick look, or to stimulate interest.

Pedal vs. Peddle

A foot lever versus selling goods.

Perpetrate vs. Perpetuate

Committing a crime versus making something continue indefinitely.

Perspective vs. Prospective

A point of view versus something likely to happen in the future.

Plain vs. Plane

Simple/flat land versus an aircraft or a flat surface.

Poor vs. Pour vs Pore

Lacking money versus flowing liquid versus skin opening/study.

Pore vs. Pour

To study something closely versus the flow of a liquid.

Precede vs. Proceed

Coming before in time versus moving forward with an action.

Prescribe vs. Proscribe

To recommend versus to forbid.

Principal vs. Principle

A person or main thing versus a fundamental rule or belief.

Rack vs. Wrack

A frame/shelf versus destruction.

Rain vs. Reign vs Rein

Water from sky versus royalty rule versus horse control.

Regimen vs. Regiment

A prescribed way of life versus a military unit.

Rein vs. Reign

Control via straps versus the period of a monarch's rule.

Right vs. Write

Correct/direction versus composing text.

Road vs. Rode

A street versus the past tense of ride.

Role vs. Roll

A part in a play/job versus moving by turning/a list.

Root vs. Route vs Rout

The base of a plant/admin versus a path versus a messy defeat.

Scene vs. Seen

A part of a movie/place versus past participle of see.

Stair vs. Stare

A step in a flight versus looking fixedly.

Stationary vs. Stationery

Not moving versus paper and writing supplies.

Their vs. There vs They're

Three homophones with completely different meanings and uses.

Threw vs. Through

Past of throw versus moving from one side to the other.

To vs. Too vs Two

Direction/action versus also/excessive versus the number.

Tortuous vs. Torturous

Full of twists versus involving pain.

Vial vs. Vile

A small glass container versus wicked/unpleasant.

Waive vs. Wave

To give up a right versus moving your hand or a water ridge.

Wary vs. Weary

Being cautious versus being tired.

Weak vs. Week

Lacking strength versus seven days.

Whose vs. Who's

Possessive form versus the contraction for 'who is'.

Your vs. You're

One shows possession, the other is a contraction of 'you are'.

Immanent vs. Imminent

Inherent within versus about to occur.

Discreet vs. Discrete

Tactful versus separate.

Assure vs. Ensure

Promise a person versus guarantee a thing.

Breath vs. Breathe

The noun versus the verb.

Device vs. Devise

A gadget versus to invent.

Aisle vs. Isle

A passage versus an island.

Altogether vs. All together

Completely versus gathered in one place.

Anyway vs. Any way

In any case versus by any method.

Awhile vs. A while

Adverb versus noun phrase.

Cite vs. Site / Sight

To quote, a location, or a view.

Deserts vs. Desserts

Dry lands or what one deserves versus sweets.

Everyday vs. Every day

Adjective versus adverbial phrase.

Foreword vs. Forward

An opening note versus a direction.

Gorilla vs. Guerrilla

The ape versus the fighter.

Later vs. Latter

Time versus the second of two.

Lightning vs. Lightening

Bolts versus making lighter.

Moral vs. Morale

Ethical versus spirit.

Patience vs. Patients

The virtue versus people in care.

Pray vs. Prey

To entreat versus the hunted.

Presents vs. Presence

Gifts versus being there.

Sole vs. Soul

Single or fish or foot versus spirit.

Stake vs. Steak

A wager or post versus meat.

Vain vs. Vein / Vane

Proud or futile, a blood vessel, a weather indicator.

Waist vs. Waste

Middle of the body versus squander.

Bear vs. Bare

The animal or to carry versus uncovered.

Heel vs. Heal

Back of the foot versus to cure.

Mail vs. Male

Letters versus men.

Main vs. Mane

Chief versus lion’s hair.

Meat vs. Meet / Mete

Flesh versus to encounter versus to dole out.

Right vs. Write / Rite / Wright

Correct or direction versus to compose versus a ritual versus a maker.

Sea vs. See

The ocean versus to perceive.

Sell vs. Cell

Exchange for money versus a small room or biological unit.

Sight vs. Cite / Site

A view versus a reference versus a location.

Sun vs. Son

The star versus a male child.

Tail vs. Tale

An animal’s appendage versus a story.

To vs. Too / Two

Preposition versus also versus the number.

Weather vs. Whether

The atmosphere versus an introduction to alternatives.

We vs. Wee

Plural first person versus tiny.

Wood vs. Would

A material versus an auxiliary verb.

Apart vs. A part

Separated versus one portion.

Cache vs. Cash

A hidden store versus money.

Cast vs. Caste

To throw or a group of actors versus social class.

Complements vs. Compliments

Completions versus praises.

Creak vs. Creek

A squeak versus a small stream.

Fair vs. Fare

Just or light-haired versus a fee or food.

Flair vs. Flare

A talent versus a burst of flame.

Flower vs. Flour

A plant bloom versus ground wheat.

Foreword vs. Forward

Book preface versus direction.

Gaff vs. Gaffe

A hook versus a blunder.

Gate vs. Gait

A door versus a way of walking.

Grate vs. Great

To rub or a metal frame versus excellent.

Hair vs. Hare

What grows on your head versus a rabbit-like animal.

Herd vs. Heard

A group of animals versus the past tense of hear.

Holy vs. Holey / Wholly

Sacred versus full of holes versus completely.

Hoarse vs. Horse

Throat-raspy versus the animal.

Idol vs. Idyll

Object of worship versus a pastoral scene.

Incident vs. Incidence

An event versus a rate of occurrence.

Ingenious vs. Ingenuous

Clever versus innocent.

Knead vs. Need

To work dough versus to require.

Miner vs. Minor

A digger of ore versus a child or small thing.

Pail vs. Pale

A bucket versus light in colour.

Peak vs. Pique / Peek

A mountain top versus resentment versus a glance.

Quiet vs. Quite

Silent versus rather.

Review vs. Revue

An examination versus a variety show.

Serf vs. Surf

A feudal peasant versus ocean waves or to browse.

Sleight vs. Slight

Dexterity versus small or an insult.

Sole vs. Soul

Only or foot underside versus the spirit.

Stationer vs. Station

Paper-shop owner versus a place.

Straight vs. Strait

Without bends versus a narrow sea or difficulty.

Suit vs. Suite

A set of clothes or to match versus a set of rooms or music.

Taught vs. Taut

Past tense of teach versus tight.

Than vs. Then

Comparison versus time.

Through vs. Thorough

From one end to another versus complete.

Tic vs. Tick

An involuntary habit versus a blood-feeding bug or a clock sound.

Troop vs. Troupe

A military group versus a theatre company.

Way vs. Weigh / Whey

Method versus to measure heaviness versus the watery part of milk.

Wet vs. Whet

Damp versus to sharpen or stimulate.

Which vs. Witch

A relative pronoun versus a practitioner of magic.

Wreath vs. Wreathe

Decorative ring versus to encircle.

Yoke vs. Yolk

A harness or burden versus the yellow of an egg.

Sac vs. Sack

A biological pouch versus a bag.

Wander vs. Wonder

To roam versus to marvel.

Ware vs. Where / Wear

Goods versus location versus to have on.

Ad vs. Add

An advertisement versus arithmetic.

Adapt vs. Adept / Adopt

Adjust versus skilled versus take on.

Anecdote vs. Antidote

A short story versus a remedy.

Apprise vs. Appraise

To inform versus to evaluate.

Censor vs. Censure / Sensor

Suppress speech versus formal rebuke versus detector.

Climatic vs. Climactic

Climate versus climax — a reminder.

Congenital vs. Congenial

Present at birth versus agreeable.

Crotch vs. Crutch

Body joint versus walking aid.

Current vs. Currant

Present or flowing versus a small dried fruit.

Desert vs. Dessert

Arid land or abandon versus sweet course.

Discreet vs. Discrete

Careful versus separate.

Dissent vs. Descent

Disagreement versus a downward movement.

Duel vs. Dual

A contest versus two-parted.

Epic vs. Epoch

Grand in scale versus a period of time.

Florescent vs. Fluorescent

Blooming versus glowing lights.

Foul vs. Fowl

Offensive versus poultry.

Gaffe vs. Gaff

A social blunder versus a fishing pole.

Imply vs. Infer

Speaker versus listener — a quick check.

Lath vs. Lathe

A thin wood strip versus a turning machine.

Laudable vs. Laudatory

Deserving praise versus expressing praise.

Leach vs. Leech

To drain or percolate versus a bloodsucker.

Liable vs. Libel

Legally responsible versus a written defamation.

Lightening vs. Lightning

Making lighter versus sky bolts.

Lose vs. Loose

Misplace versus not tight.

Magnate vs. Magnet

A wealthy industrialist versus a magnetic object.

Metal vs. Mettle

The material versus courage.

Pair vs. Pear / Pare

Two versus fruit versus to peel or reduce.

Parameter vs. Perimeter

A limit (math/stat) versus a boundary (geometry).

Pin vs. Pen

A fastener versus writing instrument or enclosure.

Pique vs. Peak

To stir up versus to reach a high.

Pole vs. Poll

A long stick versus a survey.

Populace vs. Populous

People (noun) versus densely populated (adj).

Pour vs. Pore

Liquid versus study carefully.

Pray vs. Prey

Worship versus the hunted.

Quay vs. Key

A wharf versus a small door opener or important thing.

Raise vs. Raze

Lift up versus flatten to the ground.

Review vs. Revue

Examine versus variety show.

Raze vs. Rise

Demolish versus go up.

Reign vs. Rein

A monarch’s rule versus a horse strap.

Respectfully vs. Respectively

With respect versus in the order given.

Rifle vs. Riffle

A firearm or to rummage versus to shuffle pages.

Role vs. Roll

Part versus bread/rotate.

Roof vs. Ruff

House top versus neck collar or card-game trump.

Shear vs. Sheer

To cut versus pure or steep.

Stationary vs. Stationery

Still versus paper.

Stolid vs. Solid

Unemotional versus firm.

Tack vs. Tact

Direction (sailing) versus social grace.

Taut vs. Taunt

Tight versus to mock.

Temple vs. Templar

Sacred building or head side versus medieval knight.

Tenet vs. Tenant

A core belief versus a renter.

Than vs. Then

Comparison versus time — still confused.

Their vs. There

Possessive versus place.

Throes vs. Throws

Spasms of struggle versus tossings.

Tour vs. Tore

A trip versus past of tear.

To vs. Too

Preposition versus also.

Tragic vs. Traumatic

Disastrously sad versus causing lasting harm.

Troop vs. Troupe

Military unit versus theatre company.

Turbid vs. Turgid

Muddy / cloudy versus swollen / bombastic.

Utter vs. Udder

To speak versus a cow’s milk gland.

Vain vs. Vein

Futile versus vessel.

Vary vs. Very

To differ versus to a high degree.

Venal vs. Venial

Corrupt versus minor / pardonable.

Weather vs. Wether / Whether

Climate versus castrated ram versus if.

Wether vs. Weather

Sheep term versus weather.

Whose vs. Who’s

Possessive versus contraction.

Wring vs. Ring

To twist (cloth) versus a circular band or sound.

Yore vs. Your

Long ago versus possessive.

Less vs. Fewer

For things you measure versus things you count.

Who vs. Whom

Subject versus object — the pronoun doing it versus the pronoun it happens to.

Lay vs. Lie

You lay something down. You lie down yourself.

Under vs. Fewer than

Position in space versus a count — ‘under’ isn’t always a substitute.

That vs. Which

Essential versus extra — a comma decides.

Comprise vs. Compose

The whole comprises the parts. The parts compose the whole.

Me vs. I

When you’re the subject versus when you’re the object.

Ironic vs. Coincidence

A reversal of expectation versus two things happening to line up.

Literally vs. Figuratively

Claiming something really happened versus using it as a turn of phrase.

Passed vs. Past

Moving by versus time gone by.

Compose vs. Constitute

Parts make a whole — but which verb?

Draft vs. Draught

Two spellings, context decides.

Principle vs. Principal

A rule versus the head — quick reminder.

Prophecy vs. Prophesy

The noun versus the verb.

Racket vs. Racquet

Noise or scheme versus a tennis bat.

Biannual vs. Biennial

Twice a year versus every two years.

Blatant vs. Flagrant

Very obvious versus shockingly bad.

Champ vs. Chomp

To bite repeatedly (classical) versus to chew heavily (modern).

Compliment vs. Complement

A second reminder — confusables of the hour.

Copyright vs. Copywrite

A legal right versus a verb for writing ad copy.

Curb vs. Kerb

US versus UK spelling for road edge.

Draft vs. Draught

A quick reminder.

Eager vs. Anxious

Looking forward versus worried.

Ferment vs. Foment

To ferment versus to stir up trouble.

Flack vs. Flak

A press agent versus criticism or anti-aircraft fire.

Forego vs. Forgo

Precede versus do without.

Historic vs. Historical

Notable in history versus of any past era.

Honor vs. Honour

US versus UK spelling.

Impact vs. Affect

Noun bridging verb.

Insure vs. Ensure / Assure

Financial policy versus make certain versus promise.

Laid vs. Lain

Past of LAY versus past of LIE.

Like vs. As

Preposition versus conjunction.

Literally vs. Virtually

Only use LITERALLY for real events.

Loan vs. Lend

Noun versus verb.

May vs. Might

Permission or possibility versus lesser possibility.

Mean vs. Median

Arithmetic average versus middle value.

Momentarily vs. Shortly

Briefly versus soon.

Nauseated vs. Nauseous

Feeling sick versus causing sickness (trad).

Regardless vs. Irregardless

Only one is standard.

Sat vs. Seated

Informal simple past versus formal participle.

Simple vs. Simplistic

Uncomplicated versus over-simplified.

That vs. Who

For things versus for people.

Who vs. Whom

Subject versus object.

Giveaway

Noun versus verb phrase.

Over-confident

Hyphen is optional.

Sometime / Some time

Adverb vs duration.

Sometimes

Adverb of frequency.

Its vs. It’s

Possessive versus contraction — a rare case where no apostrophe wins.

Its vs. It’s

Possessive versus contraction.

It vs. Its

A pronoun versus its possessive.

However, ...

Semicolon before "however" joining clauses.

Therefore, ...

Same semicolon rule.

Run-on sentence

Two clauses run together.

Oxford comma

Before the final AND.

Jones's vs Jones'

Singular names ending in S.

Hyphenated compound adjectives

Before the noun, use hyphens.

En / em dash

Different widths, different jobs.

Ellipsis vs. ....

Three dots, not four.

Scare quotes

Overused irony.

Single vs double quotes

US: double primary. UK: single primary.

Comma before "too"

Optional.

Semicolon in lists

Use when list items contain commas.

Book titles: italics

Italicize titles of long works.

Short works: quotes

Articles, poems, songs in quotes.

Album vs song

Album italic, song in quotes.

Kid's toys (plural) vs. Kids' toys

Apostrophe after S for plural possessive.

It's vs Its

See ITS section above.

You're vs Your

Contraction vs possessive.

They're / Their / There

Three sound-alikes.

A Tough Row to Hoe

A difficult task or situation to deal with; a challenging endeavor.

Actions Speak Louder Than Words

What people do matters more than what they say.

Barking Up the Wrong Tree

Pursuing the wrong course of action; wasting effort on the wrong target.

Beat Around the Bush

Avoid discussing the main issue; talk indirectly about something important.

Bite the Bullet

Face a difficult or unpleasant situation with courage; accept the unavoidable.

Break the Ice

Start conversation in a social setting; ease tension between people.

Burn the Midnight Oil

Work late into the night; work very hard on something.

Call It a Day

Stop work for the day; decide to quit for now.

Caught Red-Handed

Caught in the act of doing something wrong, with evidence right on you.

Cutting Corners

Doing something poorly or fast to save time or money.

Doom vs. Gloom

A general feeling of pessimism or disaster.

Elephant in the room

An obvious major problem or issue that people are avoiding discussing.

11 o'clock number

A big, show-stopping song or moment near the end of a performance.

Get Down to Brass Tacks

Focus on the essential facts; stop wasting time on details.

Have Your Cake vs. Eat It Too

Want to enjoy two desirable things that are mutually exclusive; want it all.

It is what it is

An expression used to accept a difficult situation that cannot be changed.

Let the Cat Out of the Bag

Reveal a secret, usually accidentally; spoil a surprise.

Low profile

Avoiding attention or publicity.

Piece of Cake

Something very easy to do.

Playing Devil's Advocate

Taking an opposing side in an argument even if you don't agree with it, to test the strength of the argument.

Raining Cats vs. Dogs

Raining very heavily; a downpour.

Rule of thumb

A broadly accurate guide or principle, based on experience rather than theory.

Silver Bullet

A simple, seemingly magical solution to a complicated problem.

Smoke vs. Mirrors

The use of deceptive or confusing explanations or descriptions to conceal the truth.

Spill the Beans

Reveal a secret; tell others something confidential.

Steep Learning Curve

A task that is difficult to learn.

The Ball Is in Your Court

It's someone's responsibility or turn to act; the decision is theirs.

Throw in the Towel

Admit defeat; give up on something; surrender.

Throwing under the bus

Betraying a friend or ally for selfish reasons.

Under the Weather

Feeling sick or unwell; not at your best.

Up in the air

Uncertain; not yet decided.

When Push Comes to Shove

When the situation becomes critical or demands action.

White Elephant

A possession that is useless or troublesome, especially one that is expensive to maintain.

Zero-sum Game

A situation in which one person's gain is equivalent to another's loss.

Wet vs. Whet

Careful: the idiom is "whet the appetite."

Sight unseen vs. Site unseen

The idiom is SIGHT UNSEEN.

About vs. Around (approximation)

Both mean approximately, but 'around' can also mean surrounding.

After vs. Following

After = later in time, Following = comes next/as a result.

At vs. In (time and place)

These prepositions have different uses for time and location.

Before vs. In Front Of

Before = earlier time or ahead, In front of = facing direction.

Bored of vs. Bored with

You can be bored with something, but "bored of" is a common slip.

By vs. With (agent)

Both show who/what does something, but in different ways.

Despite vs. In Spite Of

Both mean the same but 'despite' is shorter.

Different from vs. Different than

In standard usage, things differ from each other — not than each other.

During vs. While

During = period, While = simultaneous time.

Except vs. Besides (exclusion)

Except = not including, Besides = in addition to.

From vs. Of

Both show origin, but 'of' shows composition.

In vs. Into

In = static position, Into = movement toward.

On vs. In (location)

Different prepositions for different spatial relationships.

On vs. Onto

On = static position, Onto = movement toward surface.

Over vs. Above

Over = crossing/spanning, Above = higher position.

Since vs. For (duration)

Since = starting point, For = length of time.

Through vs. Across

Through = inside path, Across = surface path.

To vs. For (purpose)

Understanding the difference in expressing purpose.

Under vs. Below

Under = beneath/covered, Below = lower position.

Abstraction

Hiding complexity to focus on the essential features.

Boilerplate

Standard text or code that can be reused with little change.

Decoupling

Separating components so they can act independently.

Dogfooding

A company using its own product to find bugs and improve UX.

Edge Case

A problem or situation that occurs only at extreme operating parameters.

Greenfield vs. Brownfield

Starting from scratch versus working with existing systems.

Idempotent

An operation that can be performed multiple times without changing the result.

IdP vs. IAM

Identity Provider versus Identity and Access Management.

Latency vs. Throughput

Speed of a single unit versus total volume over time.

On-prem vs. Cloud

Local servers versus remote data centers.

Refactoring

Restructuring existing code without changing its external behavior.

Vertical vs. Horizontal Scaling

Adding power to one machine versus adding more machines.

Technical Debt

Choosing an easy solution now that will require more work later.

Vanilla vs. Framework

Plain, native code versus using a library or framework.

Actionable

Information that can be acted upon.

Agile vs. Waterfall

Iterative development versus linear, sequential development.

Alignment

Ensuring everyone has the same goals or understanding.

Bandwidth

Mental or physical capacity to take on more work.

Bandwidth (Office Jargon)

Originally a technical term for data capacity — now misused to mean 'time' or 'capacity to do work'.

Best Practices

Methods that are accepted as being most effective.

Bikeshedding

Wasting time on trivial details while ignoring complex issues.

Buy-in

Agreement on and support for a policy or change.

Circle Back

Discussing a topic again at a later time.

Clippy Behavior

Unsolicited and annoying help from an AI or interface.

Deep Dive

A thorough, in-depth exploration of a topic.

Deliverable

A tangible product or result to be handed over.

Disruptive

Innovations that fundamentally change an industry.

Feature Creep

The excessive ongoing addition of new features to a product.

Friction

Anything that slows down a process or makes it harder for a user.

Frictionless

A process with no obstacles or delays.

Holistic

Considering the whole system rather than just parts.

Leverage

Using something to its maximum advantage.

Low-hanging Fruit

Easy tasks or goals that can be achieved quickly.

MVP (Product)

Minimum Viable Product — the simplest version of a product that can be released.

Piggyback

To add onto an existing idea.

Pivot

A fundamental change in strategy.

Sanity Check

A quick, basic test to see if a result is even possible.

Scalability

Ability to handle growth without losing performance.

Soft Skills

Interpersonal skills like communication, empathy, and leadership.

Stakeholder

Anyone affected by or involved in a project.

Synergy

Overused buzzword meaning 'working together effectively'. Usually signals vague thinking.

Touch Base

Briefly contacting someone to stay updated.

Value-add

An extra feature or benefit that makes something more valuable.

Actor vs. Actress

Actor is now widely used as gender-neutral. Many performers prefer it over actress.

Businessman vs. Business Person/Professional

Business person, executive, or professional is preferred.

Chairman vs. Chairperson/Chair

Chairman is gender-specific; Chairperson or Chair is the inclusive standard.

Coed vs. Student

'Coed' is an outdated, often diminutive term for a female student at a mixed-gender school.

Congressman vs. Member of Congress

Representative or Member of Congress is more inclusive.

Fireman vs. Firefighter

Firefighter is the professional standard. Fireman implies the role is male-only.

Foreman vs. Supervisor

Supervisor or lead is the inclusive managerial title.

Freshman vs. First-year Student

First-year is the inclusive term for new students.

Generic 'he' vs. They/Their

Using 'he' to mean 'any person' excludes over half the population. 'They' is the accepted neutral alternative.

Latino vs. Latinx vs Latine

Gender-neutral terms for people of Latin American descent.

Layman vs. Layperson

Layperson or 'non-expert' is the inclusive way to describe someone without specialized knowledge.

Mailman vs. Mail Carrier

Mail carrier or 'postal worker' is the inclusive term.

Man-made vs. Synthetic/Artificial

Synthetic or manufactured are better alternatives to 'man-made'.

Man the phones vs. Staff the phones

Use 'staff' or 'cover' instead of 'man' as a verb.

Mankind vs. Humankind

Mankind implies men represent all people. Humankind, humanity, or people include everyone.

Manpower vs. Workforce/Labor

Workforce or personnel are better than 'manpower'.

Non-binary vs. Transgender

Gender identity outside the binary versus identity different from birth sex.

Policeman vs. Police Officer

Police officer is the correct, gender-neutral title.

They/Them Pronouns

Using singular they for individuals.

Salesman vs. Sales Representative

Sales representative or 'salesperson' is the professional standard.

Spokesman vs. Spokesperson

Spokesperson is the neutral professional title used when the gender of the person isn't relevant.

Sportsmanship vs. Fair Play

Fair play or sporting conduct is more inclusive than 'sportsmanship'.

Steward vs. Flight Attendant

Flight attendant is the industry standard for both men and women.

Stewardess vs. Flight Attendant

Stewardess and steward are outdated. Flight attendant is the standard professional term.

Waiter/Waitress vs. Server

Server is the preferred gender-neutral term in the hospitality industry.

Weatherman vs. Meteorologist

Meteorologist or weather forecaster is more professional and inclusive.

Workman vs. Worker/Technician

Worker or technician is preferred over 'workman'.

Added Bonus

A bonus is something added extra, so 'added' is redundant.

Advance Planning

Planning is inherently about preparing in advance, so 'advance' is redundant.

ATM Machine

ATM already stands for 'Automated Teller Machine', so adding 'machine' is redundant.

Close Proximity

Proximity means closeness, so 'close' adds no new information.

Common Redundancies

ATM machine, added bonus, return back — saying the same thing twice.

End Result

A result is by definition an outcome or end product, making 'end' redundant.

Free Gift

A gift is already something given freely, so 'free' adds nothing.

Past History

History is by definition the study of past events, so 'past' is redundant.

PIN Number

PIN stands for 'Personal Identification Number', so adding 'number' is redundant.

Repeat Again

Repeat means to do something again, so 'again' is redundant.

Revert Back

Revert already means to go back, so 'back' is redundant.

Unexpected Surprise

A surprise by definition is something unexpected, making 'unexpected' redundant.

AFK

Away From Keyboard — a quick way to say you're stepping away from your computer.

Bump

Bring Up My Post — a comment made to move a thread to the top of a feed.

Cancel Culture

The practice of withdrawing support for public figures after they do something offensive.

Clickbait

Content with a sensationalized headline designed to get clicks.

Clout

Influence or social standing, especially on social media.

DM / PM

Direct Message / Private Message — taking a public conversation into a private one.

Doomscrolling

Continuously scrolling through bad news despite it being upsetting.

Echo Chamber

An environment where a person only encounters information that reflects their own opinions.

FOMO

Fear Of Missing Out — the anxiety that others are having fun without you.

FYI

For Your Information — used to share news that doesn't necessarily require a response.

Gatekeeping

When someone tries to control who has access to a community or identity.

Ghosting vs. Leaving on Read

Ceasing all communication versus seeing a message and not replying.

Glow Up

A major transformation or improvement.

IMO / IMHO

In My Opinion / In My Humble Opinion — used to soften a statement or flag it as personal view.

IRL

In Real Life — distinguishing the physical world from the digital one.

Main

Your primary account or your primary character in a game.

Main Character Energy

Acting like the protagonist of your own life.

NSFW

Not Safe For Work — a warning that content is inappropriate for a professional environment.

OOTD

Outfit Of The Day — common in fashion and lifestyle content.

Ratio / Ratioed

When a social media post has significantly more 'replies' than 'likes'.

Receipts

Evidence or proof of a claim.

Shadowban

When a platform hides a user's content without notifying them.

Spam

Unwanted bulk messages, OR to send repetitive messages. Borrowed from a Monty Python sketch.

Spill the Tea

To share gossip.

Stan

An overzealous or obsessive fan of a particular celebrity or brand.

Sus

Short for 'suspicious' or 'suspect' — popularised by the game Among Us.

TBA / TBD / TBC

To Be Announced / Determined / Confirmed — placeholders for missing info.

Throwaway Account

An anonymous account created for a specific, often one-time purpose.

TL;DR

Too Long; Didn't Read — a brief summary placed at the end of a long post.

Touch Grass

An insult/advice to go outside and reconnect with reality.

Troll

Someone who posts inflammatory content to provoke an emotional response.

Verified / Blue Check

A badge on social media indicating an account is authentic (or paid for).

Virtue Signaling

Expressing an opinion to show you are a good person, without taking action.

Aggravate vs. Irritate

Aggravate" means to make worse; "irritate" means to annoy.

Alot vs. A Lot

'Alot' is not a word. 'A lot' is always two words.

Anxious vs. Eager

Anxious = worried/nervous. Eager = excited to do something.

Beside vs. Besides

Beside" means next to; "besides" means in addition to.

Between vs. Among

Between = two items. Among = three or more; thinking as a group.

Biweekly Confusion

Biweekly" can mean twice a week or every two weeks.

Comprise vs. Compose

Comprise = to include/consist of. Compose = to make up/form.

Could Of vs. Could Have

'Could of' is always wrong. It sounds like 'could've' but the correct form is 'could have'.

Decimate vs. Devastate

Decimate originally meant to destroy one in ten. It doesn't mean total destruction.

Ensure vs. Insure vs Assure

Three similar words with distinct meanings.

Envy vs. Jealousy

Envy = wanting what someone else has. Jealousy = fear of losing what you have.

I Could Care Less

The correct phrase is 'I couldn't care less'. Saying 'could' means you actually do care.

Implicit vs. Explicit

Implicit" is implied; "explicit" is clearly stated.

Irregardless (Not a Word)

Irregardless is not standard English. The correct word is regardless.

Mute vs. Moot Point

Irrelevant vs Silent.

Peruse vs. Skim

Peruse means to read carefully and thoroughly — most people think it means the opposite.

Suppose To vs. Supposed To

The 'd' in supposed is silent, so many people forget to write it.

Supposed to vs. Suppose

Suppose" is a verb, "supposed" is an adjective in "supposed to.

Unique vs. Very Unique

Unique is an absolute — you can't be 'sort of' or 'very' one-of-a-kind.

Use to vs. Used to

Used to" indicates a past habit; "use to" is incorrect in most cases.

Weather vs. Whether

Weather = climate conditions. Whether = if; making a choice.

Would Of vs. Would Have

These should be 'would've', 'could've', 'should've' — contractions of 'have'.

Agreement with Compound Subjects

Compound subjects joined by "and" are plural; those with "or" depend on the nearest subject.

Ambiguous Pronouns

Make sure it's clear what noun a pronoun refers to.

Apostrophe Misuse

Apostrophes indicate possession or contractions, not plurals.

Bring vs. Take

Bring means movement toward you. Take means movement away from you.

Capitalization Errors

Follow rules for capitalizing letters properly.

Comma Splice

Using a comma to join two independent clauses without a conjunction.

Dangling Modifier

A descriptive phrase or clause that doesn't clearly modify the intended word.

Dangling Modifiers

A modifier must clearly refer to the word it's modifying.

Double Negative

Using two negative words in one clause creates confusion or unintended meaning.

Double Negatives

Avoid using two negatives in one sentence.

Farther vs. Further

Physical distance versus degree, extent, or additional discussion.

Sentence Fragments

An incomplete sentence that lacks a subject and/or predicate.

Hyphenation Rules

Use hyphens correctly in compound words and phrases.

Incorrect Prepositions

Use the correct preposition for the context.

Misplaced Modifier

A descriptive word or phrase that's placed too far from the word it describes.

Misplaced Modifiers

Place modifiers next to the words they describe.

Parallel Structure

Keep similar items in the same grammatical form.

Lack of Parallelism

Items in a list or series should be in the same grammatical form.

Pronoun-Antecedent Agreement

Pronouns must match their antecedents in number and gender.

Run-On Sentence

Two or more independent clauses joined without proper punctuation or conjunctions.

Run-on Sentences

Break up sentences that go on and on without proper breaks.

Semicolon vs. Colon

Use semicolons and colons for different purposes.

Split Infinitive

Avoid putting adverbs between "to" and the verb.

Subject-Verb Agreement

The verb must match the subject's number (singular/plural).

Tense Consistency

Avoid switching tenses within the same passage or narrative.

Phenomenon vs. Phenomena

Singular versus plural.

Stimulus vs. Stimuli

Singular versus plural.

There is vs. There are

Singular versus plural existentials.

Each

"Each" is singular.

Neither / Nor

Verb agrees with the nearer subject.

Data is vs. Data are

Singular in common use, plural in science.

Media is vs. Media are

Collective versus plural.

Criteria vs. Criterion

Plural versus singular Greek forms.

Phenomena vs. Phenomenon

Plural versus singular.

Bacteria is vs. Bacteria are

Plural of bacterium.

Agenda

Already singular in modern English.

None is vs. None are

Both are fine — match context.

The team is vs. The team are

AmE singular, BrE plural.

Myself vs. Me / I

Reflexive only when the subject does it to itself.

That (for people) vs. Who

Use WHO for people.

Hopefully

Sentence adverb — accepted now.

To boldly go vs. To go boldly

Split infinitive — not a rule.

Ending with a preposition

Also a myth.

Less items vs. Fewer items

Countables take FEWER.

Amount vs. Number

AMOUNT for mass. NUMBER for count.

Between vs. Among

Two versus more than two.

Between you and I vs. Between you and me

After a preposition, use object pronouns.

Than me vs. Than I

Traditional: elliptical clause.

Drank vs. Drunk

Past participle needs HAVE.

Sank vs. Sunk

Past participle needs HAVE.

Laid / Lay / Lain

The famous muddle.

Hung (executed) vs. Hanged

People are hanged.

Drug (past of drag) vs. Dragged

Regional — standard is DRAGGED.

Snuck vs. Sneaked

Both accepted now.

Stove in

Nautical past tense survives.

Alumni vs. Alumnus / Alumna

Latin number and gender.

1990's vs. 1990s

No apostrophe on plain plurals.

It's collar vs. Its collar

Possessive pronouns skip apostrophe.

Could of vs. Could have

Sound-alike error.

Alright (formal) vs. All right

Formal writing prefers ALL RIGHT.

Cannot vs. Can not

One word is standard.

Any more vs. Anymore

US: ANYMORE (adverb).

Everyone vs. Every one

Person versus object.

Anyone vs. Any one

Person versus thing.

Nobody vs. No body

Pronoun versus physical body.

Into vs. In to

Motion versus separate prep + adverb.

Onto vs. On to

Motion versus continuation.

May have (past) vs. Might have

For unreal past events, use MIGHT HAVE.

Whom as subject vs. Who

WHOM never leads a verb.

If I was vs. If I were

Subjunctive for hypotheticals.

I wish I was vs. I wish I were

Subjunctive after WISH.

Taller than whom vs. Taller than who

Informal allows WHO; formal uses WHOM.

Irregardless vs. Regardless

Nonstandard double negative.

Orientate vs. Orient

BrE accepts orientate; US prefers orient.

Administrate vs. Administer

ADMINISTER is the verb.

Preventative vs. Preventive

Both exist; PREVENTIVE is tighter.

Commentate vs. Comment

COMMENTATE is for broadcasts only.

Conversate vs. Converse

CONVERSATE is nonstandard.

Enthuse vs. Be enthusiastic

ENTHUSE is informal.

Fortuitous vs. Fortunate

Traditionally: accidental, not lucky.

Ironic (coincidence)

Irony isn't mere coincidence.

Begs the question (raises)

Logical fallacy, not "raises."

Classic vs. Classical

Defining example versus Greco-Roman / formal.

Economic vs. Economical

Of the economy versus thrifty.

Continual (nonstop) vs. Continuous

Continual = repeated; continuous = unbroken.

Disburse vs. Disperse

Pay out versus scatter.

Flout vs. Flaunt

Defy versus show off.

Peak vs. Pique / Peek

Summit versus stir versus glance.

Home in (focus) vs. Hone in

HOME IN is the original; HONE IN now accepted.

For all intensive purposes vs. For all intents and purposes

Classic eggcorn.

Nip it in the butt vs. Nip it in the bud

Nip a bud, not a butt.

One in the same vs. One and the same

Set phrase.

I could care less vs. I couldn't care less

American variant flips the logic.

First come, first serve vs. First come, first served

Past participle.

Tow the line vs. Toe the line

Sports origin — toe the starting line.

Shoe-in vs. Shoo-in

Horse racing origin.

Wet my appetite vs. Whet my appetite

Sharpen, not moisten.

Deep-seeded vs. Deep-seated

Firmly set, not planted.

Chomping at the bit vs. Champing at the bit

Traditional: CHAMPING.

Beckon call vs. Beck and call

Two old nouns.

Baited breath vs. Bated breath

BATED = abated.

Slight of hand vs. Sleight of hand

Skill, not insult.

Sneak peak vs. Sneak peek

Peek (glance), not peak (summit).

Free reign vs. Free rein

Horse reins, not monarchy.

All of the sudden vs. All of a sudden

Traditional idiom.

Should of vs. Should have

Sound-alike.

Would of vs. Would have

Sound-alike.

Must of vs. Must have

Sound-alike.

Supposably vs. Supposedly

Usually intended: SUPPOSEDLY.

Irrespective vs. Regardless

Both correct; IRREGARDLESS is not.

Each other vs. One another

Two versus many.

10 items or less vs. 10 items or fewer

Supermarket sign war.

Persuade to vs. Convince that

Action versus belief.

The reason is because vs. The reason is that

Redundant.

If (whether) vs. Whether

Formal writing prefers WHETHER.

Over 100 people vs. More than 100 people

Both now accepted.

Since (because) vs. Because

Avoid if time-ambiguous.

As (because) vs. Because

Same ambiguity as SINCE.

Whilst vs. While

BrE literary; US uses WHILE.

Amongst vs. Among

Same dialect pattern.

Towards vs. Toward

US drops the S.

Backwards vs. Backward

US drops the S.

Forwards vs. Forward

US drops the S.

Because, I couldn't vs. Because I couldn't

Don't put a comma after "because."

Since, he left vs. Since he left

Same rule.

Awful (Semantic Shift)

Originally meant 'inspiring awe' — now means 'very bad' or 'terrible'.

Clue (Semantic Shift)

Originally meant 'ball of thread' — now means 'piece of evidence' or 'hint'.

Decimate (Semantic Shift)

Originally meant 'kill one in ten' — now means 'destroy a large part' without specific ratio.

Egregious (Semantic Shift)

Originally meant 'remarkably good' — now means 'remarkably bad' or 'outrageous'.

Girl (Semantic Shift)

Once meant 'young person of either sex' — now specifically means 'female child'.

Literally (Misused)

'Literally' means actually, in reality. It's misused constantly as an intensifier when something is figurative.

Meat (Semantic Shift)

Originally meant 'any food' — now specifically means 'animal flesh'.

Naughty (Semantic Shift)

Originally meant 'having nothing' — now means 'misbehaving' or 'disobedient'.

Nice (Semantic Shift)

Once meant 'ignorant or foolish' — now one of English's most beloved words for pleasant things.

Silly (Semantic Shift)

From 'blessed or happy' in Old English to 'foolish or stupid' in modern times.

Terrific (Semantic Shift)

Originally meant 'causing terror or dread' — now means 'wonderful' or 'excellent'.

Villain (Semantic Shift)

Originally meant 'farm worker' — now means 'evil person' or 'scoundrel'.

Bet

Slang for 'okay,' 'I agree,' or 'it's on.'

Dead (Skull Emoji)

Used to indicate that something is extremely funny.

Delulu

Short for delusional.

Flex

To show off or boast about something.

Lowkey vs. Highkey

Subtle/secretive versus obvious/intense.

Mid

Used to describe something that is mediocre or unimpressive.

No Cap

Slang for 'no lie' or 'for real' — emphasis that you're being completely truthful.

Living Rent-Free

When something or someone occupies your thoughts constantly without permission.

Sending Me

Used when something is extremely funny or surprising.

Slay

To perform or look exceptionally well. A high compliment meaning you absolutely crushed it.

Tea

Slang for gossip or inside information.

Understood the Assignment

When someone perfectly nails what was expected of them — usually about fashion, attitude, or performance.

Valid

Reasonable, understandable, or good.

Vibe Check

Assessing the energy or mood of a person or situation.

Burnout

State of emotional, physical, and mental exhaustion caused by excessive stress.

Gaslighting

Psychologically manipulating someone into questioning their own reality.

Glass Ceiling

An unofficial barrier to advancement in a profession, especially affecting women and minorities.

Humblebrag

Bragging while masking it with a complaint or modesty.

Imposter Syndrome

Doubting your abilities and feeling like a fraud despite your success.

Microaggression

Subtle, indirect, or unintentional discrimination.

Red Flag vs. Green Flag

Warning signs versus positive indicators.

Tone Policing

Attacking the way someone expresses an argument rather than the argument itself.

Toxic Positivity

The belief that people should maintain a positive mindset even in dire situations.

Whataboutism

Deflecting a criticism by pointing at a different problem or person.

Grateful vs. Gratefull

Only one L — "grateful."

Ideologue vs. Idealogue

One correct spelling.

Sacrilegious vs. Religious

A notorious spelling trap.

Accomodate vs. Accommodate

Two Cs, two Ms.

Neccessary vs. Necessary

One C, two Ss.

Occurence vs. Occurrence

Two Rs, two Cs.

Embarass vs. Embarrass

Two Rs, two Ss.

Millenium vs. Millennium

Two Ls, two Ns.

Seperate vs. Separate

There's A RAT in separate.

Definately vs. Definitely

I before E? No — I before T.

Recieve vs. Receive

I before E except after C.

Beleive vs. Believe

I before E.

Wierd vs. Weird

Exception to the rule.

Sieze vs. Seize

Exception to the rule.

Foriegn vs. Foreign

Silent G — and EI, not IE.

Hieght vs. Height

Exception pattern.

Judgment vs. Judgement

US drops the E, UK keeps it.

Acknowledgement vs. Acknowledgment

Same US/UK pattern.

Concensus vs. Consensus

It's SENSE, not CENSUS.

Tendancy vs. Tendency

-ENCY, not -ANCY.

Concience vs. Conscience

SCI in the middle.

Conscentious vs. Conscientious

The SCI pattern.

Rythm vs. Rhythm

Two Hs, one Y — no A, I, E, O, U.

Beaurocracy vs. Bureaucracy

BUREAU root.

Misellaneous vs. Miscellaneous

MIS + CELL + ANEOUS.

Priviledge vs. Privilege

No D.

Maintainance vs. Maintenance

Verb MAINTAIN → noun MAINTENANCE.

Supercede vs. Supersede

One of a kind — SEDE, not CEDE.

Liason vs. Liaison

Two Is.

Pronounciation vs. Pronunciation

Drop the O.

Miniscule vs. Minuscule

MINUS root.

Vaccum vs. Vacuum

One C, two Us.

Momento vs. Memento

MEMENTO comes from memory.

Mischievious vs. Mischievous

Three syllables, not four.

Greatful vs. Grateful

GRATE root, not GREAT.

Mispell vs. Misspell

Double S.

Misunderstand

Prefix MIS adds no extra letter here.

Acquaintence vs. Acquaintance

-ANCE, not -ENCE.

Gaurantee vs. Guarantee

GUA- at the start.

Questionaire vs. Questionnaire

Double N.

Millionare vs. Millionaire

-AIRE ending.

Vehical vs. Vehicle

-ICLE, not -ICAL.

Practice / Practise

US: both spelled PRACTICE. UK: noun PRACTICE, verb PRACTISE.

Advise (noun) vs. Advice

Noun has C, verb has S.

License / Licence

US: both LICENSE. UK: LICENCE noun, LICENSE verb.

Whiskey / Whisky

Irish & US: WHISKEY. Scottish: WHISKY.

Theatre / Theater

US: THEATER. UK: THEATRE.

Colour vs. Color

US: COLOR. UK: COLOUR.

Organise vs. Organize

US: -IZE. UK: either.

Travelled vs. Traveled

US single L, UK double L.

Grey vs. Gray

US: GRAY. UK: GREY.

Gaol vs. Jail

Archaic UK GAOL.

Ax vs. Axe

US often drops the E.

Check vs. Cheque

Banking: UK writes CHEQUE.

Tyre vs. Tire

UK: TYRE (wheel).

Analyse vs. Analyze

US: -YZE. UK: -YSE.

Sceptic vs. Skeptic

US: SKEPTIC.

Plough vs. Plow

US: PLOW.

Catalogue vs. Catalog

US drops the UE.

Pyjamas vs. Pajamas

US PAJ-, UK PYJ-.

Aluminium vs. Aluminum

US: 4 syllables. UK: 5.

Licence plate vs. License plate

US: LICENSE with S.

Maths vs. Math

US: MATH. UK: MATHS.

Favour vs. Favor

US drops U.

Honour vs. Honor

US drops U.

Labour vs. Labor

US drops U.

Humour vs. Humor

US drops U.

Rumour vs. Rumor

US drops U.

Armour vs. Armor

US drops U.

Flavour vs. Flavor

US drops U.

Centre vs. Center

US: -ER. UK: -RE.

Fibre vs. Fiber

US: -ER. UK: -RE.

Metre vs. Meter

US: -ER. UK: -RE.

Litre vs. Liter

US: -ER. UK: -RE.

Wierdo vs. Weirdo

Follows WEIRD pattern.

Apparant vs. Apparent

-ENT, not -ANT.

Independant vs. Independent

-ENT.

Relevent vs. Relevant

-ANT.

Cematary vs. Cemetery

All Es.

Calender vs. Calendar

-AR ending.

Grammer vs. Grammar

-AR ending.

Familier vs. Familiar

-AR ending.

Particular

Well-behaved one.

Ocassion vs. Occasion

Double C, single S.

Proffession vs. Profession

One F, two Ss.

Proffessional vs. Professional

One F, two Ss.

Adress vs. Address

Two Ds, two Ss.

Apreciate vs. Appreciate

Double P.

Oportunity vs. Opportunity

Double P.

Parralel vs. Parallel

One R, two Ls.

Comittee vs. Committee

Double everything.

Succede vs. Succeed

-CEED ending.

Procede vs. Proceed

-CEED ending.

Excede vs. Exceed

-CEED ending.

Acceed vs. Accede

-CEDE ending.

Reccomend vs. Recommend

One C, double M.

Exagerate vs. Exaggerate

Double G.

Harrass vs. Harass

One R, two Ss.

Accross vs. Across

One C.

Tommorow vs. Tomorrow

One M, double R.

Untill vs. Until

Single L.

Dependant vs. Dependent

US: -ENT adjective.

Alright (casual) vs. All right

Casual contexts only.

Pasttime vs. Pastime

One T, not two.

Over-all vs. Overall

One word.

Under way vs. Underway

Typically one word.

LCD display vs. LCD

LCD = Liquid Crystal Display.

HIV virus vs. HIV

HIV = Human Immunodeficiency Virus.

GPS system vs. GPS

GPS = Global Positioning System.

Please RSVP vs. RSVP

RSVP already means "please respond."

Return back vs. Return

RETURN = come back.

Final outcome vs. Outcome

Outcomes are final.

Future plans vs. Plans

Plans are by definition future.

Past experience vs. Experience

Experience is past by nature.

New innovation vs. Innovation

Innovations are new.

Brief summary vs. Summary

Summaries are brief.

Absolutely certain vs. Certain

CERTAIN already means absolute.

Completely unique vs. Unique

Unique is not a degree.

Totally destroyed vs. Destroyed

Destroyed is absolute.

Totally annihilated vs. Annihilated

Annihilation is absolute.

Whether or not vs. Whether

WHETHER implies or-not.

Reason why vs. Reason

REASON already implies WHY.

Cash money vs. Cash

Cash IS money.

True fact vs. Fact

Facts are true.

Personal opinion vs. Opinion

Opinions are personal.

12 noon vs. Noon

Noon is 12.

12 midnight vs. Midnight

Midnight is 12.

Advance warning vs. Warning

Warnings come in advance.

Anonymous stranger vs. Stranger

Strangers are anonymous.

Armed gunman vs. Gunman

Gunmen are armed.

Actual facts vs. Facts

Facts are actual.

Basic fundamentals vs. Fundamentals

Fundamentals are basic.

Completely finished vs. Finished

Finished is total.

Consensus of opinion vs. Consensus

Consensus is about opinion.

Continue on vs. Continue

CONTINUE already means to go on.

Cooperate together vs. Cooperate

Co- means together.

Collaborate together vs. Collaborate

Col- means together.

Merge together vs. Merge

MERGE means combine.

Combine together vs. Combine

COMBINE means join.

Crisis situation vs. Crisis

Crisis is a situation.

Current status vs. Status

Status is always current.

Current trend vs. Trend

Trends are current.

Dead corpse vs. Corpse

Corpses are dead.

Depreciate in value vs. Depreciate

Depreciate is about value.

Descend down vs. Descend

Descend is downward.

Ascend up vs. Ascend

Ascend is upward.

Enter in vs. Enter

Enter = go in.

Exit out vs. Exit

Exit = go out.

File folder vs. Folder

Folders hold files.

False pretense vs. Pretense

Pretenses are false.

Favorites

A "favorite" can only be one.

Follow after vs. Follow

Follow means to come after.

Foreign imports vs. Imports

Imports are foreign.

Frozen ice vs. Ice

Ice is frozen.

Gather together vs. Gather

Gather = come together.

General consensus vs. Consensus

Consensus is general.

General public vs. Public

Public is general.

Joined together vs. Joined

Join = bring together.

Lag behind vs. Lag

LAG means to fall behind.

Major breakthrough vs. Breakthrough

Breakthroughs are major.

Mass exodus vs. Exodus

Exodus is mass.

Mental telepathy vs. Telepathy

Telepathy is mental.

Mutual cooperation vs. Cooperation

Cooperation is mutual.

Natural instinct vs. Instinct

Instincts are natural.

Nape of the neck vs. Nape

Nape IS the neck.

Null and void vs. Null / Void

Legal doublet.

Necessary requirement vs. Requirement

Requirements are necessary.

Old adage vs. Adage

Adages are old.

Old cliché vs. Cliché

Clichés are old.

Old proverb vs. Proverb

Proverbs are old.

Pair of twins vs. Twins

Twins are a pair.

Plan ahead vs. Plan

Plans look ahead.

Postpone until later vs. Postpone

Postpone = delay.

Rarely ever vs. Rarely

Rarely ≈ hardly ever.

Same identical vs. Same / Identical

Identical = same.

Safe haven vs. Haven

Havens are safe.

Small in size vs. Small

Small refers to size.

Spell out vs. Spell

Spelling is out-loud by nature.

Still remains vs. Remains

Remains is still.

Sum total vs. Sum / Total

Sum = total.

12 midnight (again) vs. Midnight

See 12 midnight entry above.

Ultimate goal vs. Goal

Goals are ultimate.

Unconfirmed rumor vs. Rumor

Rumors are unconfirmed.

Unintentional mistake vs. Mistake

Mistakes are unintentional.

Prepone vs. Bring forward

Indian English coinage — "move earlier."

Please revert vs. Please reply

REVERT = reply (IndE) vs. return (elsewhere).

Do the needful vs. Please handle this

Colonial-era phrase.

Kindly do the needful