as in traitorous
not true in one's allegiance to someone or something
colonists who later proved to be unfaithful to the cause of independence
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Recent Examples of unfaithful
Season 3 also includes the heightened drama of finding out what really happened regarding allegations of Jessi Ngatikaura being unfaithful to her husband and the unraveling of her and some of the other women’s relationship with Demi Engemann, who has had tension with more than a few of them.
—
Lisa Respers France, CNN Money, 11 Nov. 2025
Conrique’s dusky voice effortlessly conveys the emotional distress, before turning the song into one of bravery, as the protagonist leaves the unfaithful lover and then reminds the ex of all the ways those ongoing habits will lead to heartbreak in future relationships.
—Jessica Nicholson, Billboard, 10 Nov. 2025
Both men had allegedly been unfaithful.
—Madison E. Goldberg, PEOPLE, 7 Oct. 2025
There’s a sociological connection between some things that anti-liberals say and some things that certain liberals say, and that’s because certain liberals were unfaithful to their liberalism.
—Isaac Chotiner, New Yorker, 23 Sep. 2025
See All Example Sentences for unfaithful
Lisa Respers France, CNN Money, 11 Nov. 2025
Conrique’s dusky voice effortlessly conveys the emotional distress, before turning the song into one of bravery, as the protagonist leaves the unfaithful lover and then reminds the ex of all the ways those ongoing habits will lead to heartbreak in future relationships.
—Jessica Nicholson, Billboard, 10 Nov. 2025
Both men had allegedly been unfaithful.
—Madison E. Goldberg, PEOPLE, 7 Oct. 2025
There’s a sociological connection between some things that anti-liberals say and some things that certain liberals say, and that’s because certain liberals were unfaithful to their liberalism.
—Isaac Chotiner, New Yorker, 23 Sep. 2025
See All Example Sentences for unfaithful
Recent Examples of Synonyms for unfaithful
Adjective
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Russell fabricates a lie with the rest of the villains, and the heroes believe it, despite a warning from one traitorous tribemate.—
Literary Hub,
Literary Hub,
5 Dec. 2025
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That video drew the ire of President Donald Trump, who deemed it traitorous.—
Mike Wall,
Space.com,
25 Nov. 2025
Adjective
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Social media reaction — good or bad, depending on the performance and result — is an unreliable barometer of reality.—
Andy Naylor,
New York Times,
28 Jan. 2026
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The continent has in recent years drastically cut its reliance on Russian pipeline gas following Moscow’s 2022 invasion of Ukraine, but its main source to fill the gap, Washington, has proven unreliable, making homegrown clean power all the more necessary.—
Natasha Bracken,
semafor.com,
27 Jan. 2026
Adjective
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Their most recent lawsuit alleges trademark infringement and counterfeiting, along with false designation of origin and seeks unspecified damages from the online sellers.—
Paul Flahive,
Austin American Statesman,
30 Jan. 2026
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His reflections on the controversies and critical snubbings that greeted movies that have since become consensus masterpieces are nuanced without descending into false modesty.—
Judy Berman,
Time,
30 Jan. 2026
Adjective
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Consumed by rage and betrayal, Eleanor is driven to take a bloody, supernatural revenge upon her faithless husband.—
Robert Lang,
Deadline,
27 Dec. 2025
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Spouses, in this gritty Philadelphia suburb, are mostly faithless, absent or dead.—
Angie Han,
HollywoodReporter,
28 Aug. 2025
Adjective
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To make these observations is not disloyal or unpatriotic.—
DP Opinion,
Denver Post,
12 Jan. 2026
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Marcano Tábata did not fall because he was seen as disloyal.—
Antonio María Delgado,
Miami Herald,
8 Jan. 2026
Adjective
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In the 2024 cycle, North Crowley scheduled Lancaster, DeSoto, Denton Guyer and Rockwall in what was arguably the most treacherous slate in Texas.—
Charles Baggarly,
Fort Worth Star-Telegram,
30 Jan. 2026
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Hiking trails that crisscross the island can be slightly more treacherous after rain, but lush forests make for enticing excursions.—
Carley Rojas Avila,
Travel + Leisure,
30 Jan. 2026
Cite this Entry
“Unfaithful.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfaithful. Accessed 2 Feb. 2026.
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