whom

What person or people; which person or people.; As the object of a verb.formalinterrogativeoften

• Whom did you ask?

What person or people; which person or people.; As the object of a preposition.formalinterrogativeoften

• To whom are you referring?
• With whom were you talking?

Used to refer to a previously mentioned person or people.formaloftenrelative

• That is the woman whom I spoke to earlier. (defining)
• Mr Smith, whom we all know well, will be giving the speech. (non-defining)

The person(s) whom; whomever.formaloften

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

Also used with names of collective nouns that are groups of people, especially singularly-named musical groups or sports teams.formalinformaloften

• Whom was Lemmy bassist for? Motörhead!