Who (pronoun)

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The pronoun who, in English, is an interrogative pronoun and a relative pronoun, used primarily to refer to persons.

Unmarked, who is the pronoun's subjective form; its inflected forms are the objective whom and the possessive whose. The set has derived indefinite forms whoever, whomever, and whoseever, as well as a further, earlier such set whosoever, whomsoever, and whosesoever (see also "-ever").