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who

pronoun (QUESTIONS)
 
 
/huː/

Definition

A1 used especially in questions as the subject or object of a verb, when asking which person or people, or when asking what someone's name is: Who did this? Who's she? Who are all those people? She asked me if I knew who had got the job. Who (also formal whom) do you want to talk to? I don't know who to ask to the party.Question words and expressions used with verbs that relate to knowing, when you want to say that something is not known: "Are they going to get married?" "Who knows?" (= It is not possible to know at the moment.) Who can tell what will happen now?Question words and expressions
(Definition of who pronoun (QUESTIONS) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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