untrustworthy

adjective

un·​trust·​wor·​thy ˌən-ˈtrəst-ˌwər-t͟hē How to pronounce untrustworthy (audio)
Synonyms of untrustworthynext
: not dependable or worthy of confidence : not trustworthy
an untrustworthy person
an untrustworthy source

Examples of untrustworthy in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But the merriment may not last long, because a Secret Santa gift exchange is about to reveal some untrustworthy players in Molly’s inner circle. Clare Mulroy, USA Today, 12 Dec. 2025 In December 2011, the judge in Michael's case granted him a new trial, citing an untrustworthy witness. Skyler Caruso, PEOPLE, 9 Dec. 2025 This mismatch reveals how reward hacking can contribute to misaligned and untrustworthy behavior. Kurt Knutsson, FOXNews.com, 6 Dec. 2025 For two decades now, almost everything people see online has been potentially incorrect, untrustworthy, or otherwise decoupled from reality. Ian Bogost, The Atlantic, 26 Nov. 2025 See All Example Sentences for untrustworthy

Word History

First Known Use

circa 1846, in the meaning defined above

Time Traveler
The first known use of untrustworthy was circa 1846

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Cite this Entry

“Untrustworthy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/untrustworthy. Accessed 13 Dec. 2025.

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