untrueとは 意味・読み方・使い方

語源

From 中期英語 untrewe, from 古期英語 untrīewe, from Proto-West Germanic *untriuwī, from Proto-Germanic *untriwwiz. Equivalent to un- +‎ true.

発音

• IPA: /ʌnˈtɹuː/
• 韻: -uː

形容詞

untrue (comparative more untrue, superlative most untrue)

1. False; not true.

   Synonyms: false, inaccurate, incorrect, unveridical, wrong; see also Thesaurus:false

   Antonym: true

   She says that I stole her necklace, but that's completely untrue.

   • 1886, Peter Christen Asbjø￵rnsen, translated by H.L. Brækstad, Folk and Fairy Tales, page 11:

     "I know it is true, for an untrue word never passed her lips."

   • 2004, George Carlin, When Will Jesus Bring the Pork Chops?‎, New York: Hyperion Books, →ISBN, →OCLC, →OL, page 264:

     This statement is untrue.

   • 2025 July 6, Daniel De Simone, “How MI5 piled falsehood on falsehood in court in the case of a spy who abused women”, in BBC News‎, retrieved 6 July 2025:

     The service aggressively maintained its position until I produced evidence proving it was untrue - including a recording of one of the calls with a senior MI5 officer.

2. Not faithful or loyal.

   Synonyms: false, perfidious, unfaithful; see also Thesaurus:treacherous

   Antonym: faithful

   • 1953, Arthur Hamilton, “Cry Me a River”:

     Now you say you're sorry / For being so untrue / Well, you can cry me a river, cry me a river

   • 1971, “Let's Stay Together”, performed by Al Green:

     Let me be the one you come running to / I'll never be untrue

   • 2019, “The Night You Didn't Come”, in Becoming Peter Ivers, performed by Peter Ivers:

     Tonight you didn't come / And my senses all were reeling / I had a certain scary feeling you'd been untrue

派生語

• untruism

Collocations

Further reading

• “untrue”, in OneLook Dictionary Search.
• “untrue”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “untrue”, in The American Heritage Dictionary of the English Language, 5th edition, Boston, Mass.: Houghton Mifflin Harcourt, 2016, →ISBN.
• “untrue”, in Collins English Dictionary.
• “untrue” (US) / “untrue” (UK) in Macmillan English Dictionary.