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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

When GPS has become so untrustworthy we need the help of quantum physics.

From The Wall Street Journal • Nov. 23, 2025

According to analysts, risks to stablecoins include an issuer deemed untrustworthy or the threat of hacking.

From Barron's • Nov. 10, 2025

They entered the postseason with an alarmingly untrustworthy bullpen, and that bullpen nearly blew a four-run lead in Game 2.

From Los Angeles Times • Oct. 6, 2025

Duer was the epitome of the enterprising speculator whom he trusted and who ultimately proved untrustworthy.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

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