Definition of untrue adjective from the Oxford Advanced American Dictionary

     

    untrue

     adjective
    adjective
    NAmE//ʌnˈtru//
     
     
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  1. 1not true; not based on facts These accusations are totally untrue. an untrue claim It is untrue to say that something like this could never happen again. synonyms at wrong
  2. 2untrue (to somebody/something) (formal) not loyal to someone or something synonym unfaithful If he agreed to their demands, he would have to be untrue to his own principles. opposite true
  3. Thesauruswrongfalse mistaken incorrect inaccurate misguided untrueThese words all describe something that is not right or correct, or someone who is not right about something.wrong not right or correct; (of a person) not right about something:I got all the answers wrong. We were wrong to assume that she'd agree.false not true or correct; wrong because it is based on something that is not true or correct:A whale is a fish. True or false? She gave false information to the insurance company.mistaken wrong in your opinion or judgment; based on a wrong opinion or bad judgment:You're completely mistaken about Jane.incorrect (somewhat formal) wrong according to the facts; containing mistakes:Many of the statistics were incorrect.inaccurate wrong according to the facts; containing mistakes:The report was badly researched and fairly inaccurate.incorrect or inaccurate?A fact, figure, or spelling that is wrong is incorrect; information, a belief, or a description based on incorrect facts can be incorrect or inaccurate; something that is produced, such as a film, report, or map, that contains incorrect facts is inaccurate.misguided wrong because you have understood or judged a situation badly:In her misguided attempts to help, she only made the situation worse.untrue not based on facts, but invented or guessed:These accusations are totally untrue.Patterns to be wrong/mistaken about something wrong/false/mistaken/incorrect/inaccurate information a(n) false/mistaken/incorrect/inaccurate/misguided belief a(n) wrong/incorrect answer
See the Oxford Advanced Learner's Dictionary entry: untrue