not faithful; false to duty, obligation, or promises; disloyal: Given how unfaithful the party has been to voters, it would be surprising if they won.
not sexually loyal to a spouse or lover; adulterous: She was concerned her husband would be unfaithful when he travelled.
not accurate or complete; inexact: The book was an unfaithful translation of the original.
Obsolete. without religious faith; unbelieving.
- un·faith·ful·ly, adverb
- un·faith·ful·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use unfaithful in a sentence
After his stroke, Bruni discovers that his long-time romantic partner Tom has been unfaithful.Bruni bio addresses stroke, vision loss, relationship woes | Kathi Wolfe | March 18, 2022 | Washington Blade
Upon arriving, she sits at the head of the table, scoops a little caviar into her mouth with a Dorito and announces her intention to divorce her unfaithful husband.Wendy Williams seems like the perfect Lifetime movie subject. So why is it so unsettling to watch? | Bethonie Butler | January 31, 2021 | Washington Post
The Supreme Court also deemed state penalties on unfaithful electors as legal.The election night winner could get dumped by faithless electors | Lance Lambert | October 19, 2020 | Fortune
The book’s most chilling scene occurs when Kravitz discovered his father, Sy, had been unfaithful—news he dutifully reported to his mom.Lenny Kravitz Opens Up About His Mom Roxie Roker And His First Love Lisa Bonet | cmurray | October 6, 2020 | Essence.com
A Democratic Senate candidate being unfaithful to his wife hits North Carolina voters harder than it might in some states, evoking the implosion of former senator and presidential candidate John Edwards.
The most obvious being their unfaithful husbands, but that really is the least of it.
Voronov previously alleged texting proof that Weir had been unfaithful.
Douglas, who played the unfaithful lawyer in the film, was the only one happy to compromise.Return of the Bunny Boiler: Fatal Attraction’s World Stage Premiere | Nico Hines | March 26, 2014 | THE DAILY BEAST
Off stage, he was an unfaithful husband, a neglectful father, and a friend only so long as you did what he wanted.
What they'll likely remember is that unfaithful scene—you know the one.
A grievous vision is told me: he that is unfaithful dealeth unfaithfully: and he that is a spoiler, spoileth.The Bible, Douay-Rheims Version | Various
Had they been unfaithful, or given way before the enemy all would have been lost.
He married in 1798, at the age of forty, a young girl of eighteen, who in consequence of this disparity was unfaithful to him.Repertory Of The Comedie Humaine, Complete, A -- Z | Anatole Cerfberr and Jules Franois Christophe
If Marguerite has not been unfaithful to you twenty times, it is because she has an exceptional nature.Camille (La Dame aux Camilias) | Alexandre Dumas, fils
She wouldn't; she replied that she loved you, and she wouldn't be unfaithful to you for anything in the world.Camille (La Dame aux Camilias) | Alexandre Dumas, fils
British Dictionary definitions for unfaithful
not true to a promise, vow, etc
not true to a wife, husband, lover, etc, esp in having sexual intercourse with someone else
inaccurate; inexact; unreliable; untrustworthy: unfaithful copy
obsolete not having religious faith; infidel
obsolete not upright; dishonest
- unfaithfully, adverb
- unfaithfulness, noun
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