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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 identity WrongMisunderstanding 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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