unfaithful

play

adjective un·faith·ful \ ˌən-ˈfāth-fəl \

Definition of unfaithful

:not faithful:

a :not adhering to vows, allegiance, or duty :disloyal

an unfaithful friend

b :not faithful to marriage vows

suspected her husband of being unfaithful

c :inaccurate, untrustworthy

an unfaithful copy of a document

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unfaithfully

play \ˌən-ˈfāth-fə-lē\ adverb

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unfaithfulness

noun

See unfaithful defined for English-language learners

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Examples of unfaithful in a Sentence

colonists who later proved to be unfaithful to the cause of independence

Recent Examples of unfaithful from the Web

While the internet has been quick to jump on this as evidence that Chance was unfaithful during his relationship with Tessa and believe it as fact, there is a major problem: this information was apparently hacked.

— gabe bergado, Teen Vogue, "The Problem With the Rumors Chance Sutton Cheated on Tessa Brooks," 16 Aug. 2017
Hunt plays the unfaithful wife of the lead investigator in a child abduction case whose guilt gives way to a malicious presence in their home.

— joey morona, cleveland.com, "Helen Hunt to shoot horror film in Cleveland this summer, report says," 8 June 2017
The episode mushroomed into a scandal in the days afterward over revelations that Woods had been unfaithful to his then-wife, Elin Nordegren.

— jill martin and rosa flores, CNN, "Tiger Woods found asleep at wheel, arrest report says," 30 May 2017
The emotional reunion between Shadow (Ricky Whittle) and his dead, unfaithful wife, Laura (Emily Browning), is inconveniently terminated when he and Mr. Wednesday (Ian McShane) are kidnapped by the New Gods.

— kathryn shattuck, New York Times, "What’s on TV Sunday: ‘The Take’ and the National Memorial Day Concert," 28 May 2017
After a heated jailhouse encounter between Hastings and his wife, each unfaithful, an alien-looking figure is seen in a nearby cell and then evaporates.

— bill keveney, USA TODAY, "Recap: 'Twin Peaks' returns, and we (still) are full of questions," 21 May 2017
SF Opera Lab presents Francis Poulenc’s intense one-person opera about an increasingly desperate woman’s final call to her unfaithful lover.

— randy mcmullen, The Mercury News, "‘Eclipsed,’ harrowing African war story, comes to San Francisco," 8 Mar. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unfaithful.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.