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Synonyms

untrustworthy

British  
/ ʌnˈtrʌstˌwɜːðɪ /

adjective

  1. not worthy of being trusted

    untrustworthy witnesses

"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

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.

The Nursing Home Abuse & Neglect Law Firm in Omaha, Neb., gives the following scenario: “An untrustworthy agent might put someone in a nursing home for their own benefit or convenience instead of actual need.”

From MarketWatch • Feb. 24, 2026

Americans also think A.I. is untrustworthy as a tool.

From Slate • Dec. 26, 2025

I’d only seen the trailer for “The Girlfriend” at the time of the shoot but knew I wanted something that contained the idea of untrustworthy narrators that seemed to be threaded throughout.

From Los Angeles Times • Dec. 23, 2025

Participants were also asked to evaluate the retailer’s trustworthiness on a seven-point scale, with one being completely untrustworthy or manipulative and seven being totally trustworthy or sincere.

From The Wall Street Journal • Nov. 17, 2025

He could find food, and show her how to reach Oxford, and those were powers that were useful, but he might still have been untrustworthy or cowardly.

From "The Subtle Knife" by Philip Pullman

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