Common fix medium
Wrong reign
Use this rein
i · WhyTwo lines, no filler
'Rein in' comes from horse reins — to control or restrain. 'Reign' is what kings do.
ii · Brew tipKeep this one
Rein in = horse reins = control. Reign = royalty. You rein in a budget.
iii · Read deeperFull entry available
60-second read
Rein vs. Reign
Control via straps versus the period of a monarch's rule.
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iv · References Cross-check