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mistake (EN)
noun, verb

noun “mistake”

singular mistake, plural mistakes
  1. something that is incorrect or wrong; an error
    He realized his mistake when he saw the correct answer.

verb “mistake”

infinitive mistake; he mistakes; past tense mistook; past part. mistaken; ger. mistaking
  1. (with "for") to wrongly identify someone or something; to confuse with another person or thing
    She mistook the stranger for her friend from college.
  2. (with "as") to misunderstand or misinterpret something
    He mistook her silence as agreement, but she was actually upset.