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English definition of “confirm”

confirm

verb [T] (PROVE TRUE)    /kənˈfɜːm/ US  /-ˈfɝːm/
B2 to prove that a belief or an opinion that was previously not completely certain is true: [+ question word] The smell of cigarette smoke confirmed what he had suspected: there had been a party in his absence. [+ (that)] Her announcement confirmed (that) she would be resigning as prime minister. The leader's speech was impressive and confirmed her faith in the party.Proving and disproving
(Definition of confirm verb (PROVE TRUE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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