whom

pronoun6

1. •
   What person or people; which person or people.
2. •
   (formal) the person or people already named, as the ones the action is directed at, used after a noun or a preposition

   • That is the woman whom I spoke to earlier. (defining)
   • Mr Smith, whom we all know well, will be giving the speech. (non-defining)
3. •
   (formal) As the object of a verb.

   • Whom did you ask?
4. •
   (formal) As the object of a preposition.

   • To whom are you referring?
   • With whom were you talking?
5. •
   (formal, informal) Also used with names of collective nouns that are groups of people, especially singularly-named musical groups or sports teams.

   • Whom was Lemmy bassist for? Motörhead!
6. •
   (formal) The person(s) whom; whomever.

   • To whom it may concern, all business of John Smith Ltd. has now been transferred to Floggitt & Runne.