untrustworthy

adjective

un·​trust·​wor·​thy ˌən-ˈtrəst-ˌwər-t͟hē 

: 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

Zermatt has earned its reputation for untrustworthy weather – the valley can get completely socked in at any time of year. —Rick Steves, Chicago Tribune, 6 Jan. 2026

Audio recordings previously obtained by the Observer and other news outlets featured McFadden berating staff, calling them untrustworthy and calling a white captain a racial slur. —Mary Ramsey, Charlotte Observer, 5 Jan. 2026

Jared Kushner, who helped bring Navarro into the White House in 2016, has described him as eccentric and untrustworthy. —Ian Parker, New Yorker, 22 Dec. 2025

Kennedy said Monarez was fired for being untrustworthy, but Monarez said Kennedy dismissed her for refusing to blindly approve the vaccine advisory panel’s recommendations. —Aria Bendix, NBC news, 16 Dec. 2025

Word History

First Known Use

circa 1846, in the meaning defined above

Rhymes for untrustworthy

• creditworthy
• blameworthy
• newsworthy
• noteworthy
• praiseworthy
• trustworthy
• unworthy
• worthy