whom

From Wiktionary

Pronunciation[change]

Pronoun[change]

Pronoun
whom

  1. (question) Whom is the object form of who.
  2. (relative) Whom is the object form of who.

Usage[change]

Whom is an object pronoun, but who is both a subject pronoun and an object pronoun. In both spoken and most written English, who is often used as an object, but a few people think only whom can be an object.