“Taller than who?”
Grammar Entry 632 / 1011 60-second read
Taller than whom vs. Taller than who
Informal allows WHO; formal uses WHOM.
The comparisoni
“Taller than whom?”
The ruleii
¶
Formal: THAN WHOM. Casual: THAN WHO is fine.
In traditional grammar THAN is a conjunction, but many editors accept it as a preposition here.
Memory aidiii
Remember it like this
Formal writing = whom.