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Synonyms

untruthful

American  
[uhn-trooth-fuhl] / ʌnˈtruθ fəl /

adjective

  1. not truthful; wanting in veracity; diverging from or contrary to the truth; not corresponding with fact or reality.


untruthful British  
/ ʌnˈtruːθfʊl /

adjective

  1. (of a person) given to lying

  2. diverging from the truth; untrue

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of untruthful

Middle English word dating back to 1325–75; see origin at un- 1, truthful

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Any account of the 14th Amendment that attempts to scrub away that history is untruthful.

From Slate Jul. 2, 2026

He calls this truth-telling, no matter how untruthful his guests are.

From The Wall Street Journal Nov. 9, 2025

As part of the settlement agreement, Big Ass Fans is required to comply with an injunction that bars it from making untruthful, deceptive or misleading marketing claims in the future.

From Los Angeles Times Jan. 30, 2025

If they find them to be false or untruthful or misleading, they publish their findings.

From Salon Nov. 30, 2024

There’s no question that this Texas-of-the- mind fable is often synthetic, sometimes untruthful, and frequently romantic, but that in no way diminishes its strength as a symbol.

From "Travels with Charley in Search of America" by John Steinbeck

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