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English definition of “mistaken”

mistaken

adjective     /mɪˈsteɪ.kən/
C1 wrong in what you believe, or based on a belief that is wrong: If you think you can carry on drinking so much without damaging your health, then you're mistaken. I'm afraid I was mistaken about how much it would cost. The negotiations continued in the mistaken belief that a peaceful agreement could be reached. a case of mistaken identityWrongMisunderstanding mistakenly     /-li/ adverb She mistakenly believed that she could get away with not paying her taxes.Faults and mistakes
(Definition of mistaken adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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