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English definition of “fool”

fool

verb     /fuːl/
B2 [T] to trick someone: Don't be fooled by his appearance . [+ into + doing sth] He fooled the old man into giving him the money .Cheating and trickingPlotting and trapping
you could have fooled me informal something that you say when you do not believe what someone says about something that you saw or experienced yourself: "I wasn't cross ." "Really? You could have fooled me."Not believing
(Definition of fool verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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