untrustworthy

ADJECTIVE

not dependable, unfaithful

Synonyms

STRONGEST

deceitful dishonest disloyal false irresponsible treacherous unreliable unsafe

STRONG

untrusty

WEAK

capricious conniving crooked devious dubious fair-weather faithless fickle fink fly-by-night guileful questionable shady sharp shifty slippery sneaky tricky trustless two-faced two-timing unassured undependable unsure untrue

Antonyms

STRONGEST

faithful frank harmless honest loyal open reliable responsible true trustworthy truthful

WEAK

dependable

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.

You can interview people, you can get court documents—you have to get court documents, because these people can be so untrustworthy.

From Slate • May 7, 2026

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

If there’s someone untrustworthy around, it’s supposed to light up and spin.

From "Harry Potter And The Prisoner Of Azkaban" by J.K. Rowling

untrustworthy

Example Sentences

Related Words