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English definition of “proof”

proof

noun [C or U] (SHOWING TRUTH)    /pruːf/
B2 a fact or piece of information that shows that something exists or is true: [+ that] Do they have any proof that it was Hampson who stole the goods? I have a suspicion that he's having an affair, though I don't have any concrete (= definite) proof. If anyone needs proof of Andrew Davies' genius as a writer, this novel is it. "How old are you?" "21." "Have you got any proof on you?" Keep your receipt as proof of purchase.Proving and disprovingInformation and messages
(Definition of proof noun (SHOWING TRUTH) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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