mistaken - definition and synonyms


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  1. 1
    [never before noun] if someone is mistaken, they are wrong about something
    mistaken about:

    He may have been mistaken about what he saw.

    sadly mistaken:

    If you think I’m going to help, you’re sadly mistaken.

    be mistaken in (doing) something:

    She is mistaken in thinking that the report was written last year.

  2. 2
    a mistaken belief, idea, opinion etc is not correct

    He was under the mistaken impression that I liked him.

derived word



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He mistakenly believed that she was married.