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will have mistaken

  • future perfect
    of mistake.
    mistake
    noun
    an error in action, calculation, opinion, or judgment caused by poor reasoning, carelessness, insufficient knowledge, etc.

Example Sentences

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If the comparison suggests itself to you of an early Christian maiden about to step out into an arena full of wild beasts, then you will have mistaken Rose.

From The Real Adventure by Raymond Moreau Crosby