Used by a phone-call receiver to ask the identity of the caller.

Asks the interlocutor for their identification

A sentry's challenge to an intruder.

(defensively) Used to ask a stranger asking a question to identify themselves

Expressing surprise, or ironic lack of surprise, upon learning something.

Alternative form of whoso

(politics) Who will defeat or dominate whom? A Bolshevist principle or slogan, urging action against the capitalists.

According to whose authority (especially in defiance) / Nobody knows; it is difficult to judge

A humorous and/or sarcastic statement of (often sexual) superiority over someone else. / (BDSM) An assertion that one is the dominant in a relationship or situation.

Person or entity whose name one does not want to mention but which is known to the person to whom one is speaking.