1
as in adultery
lack of faithfulness especially to one's husband or wife
infidelity can lead to divorce
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in betrayal
the act or fact of violating the trust or confidence of another
the one thing that the political boss will not forgive is infidelity
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in misconduct
a sexual encounter or relationship between a married person and someone other than their spouse
had known about his wife's infidelities for years
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of infidelity
Pugh had filed for a divorce for infidelity, said Troy Brown, the husband of one of the women who was shot and father to one of the deceased children.
—
Zoe Sottile, CNN Money, 20 Apr. 2026
Vanderpump Rules was basically built on Schroeder’s distaste for Shay (and on the male cast’s constant infidelity).
—Bethy Squires, Vulture, 19 Apr. 2026
She was eventually consumed by his infidelities.
—Álex Ander, Vanity Fair, 17 Apr. 2026
Otake said Gerhardt Konig was not someone who would try to commit murder, but someone who was struggling with infidelity and trying to do his best.
—Jennifer Sinco Kelleher, Los Angeles Times, 9 Apr. 2026
See All Example Sentences for infidelity
Zoe Sottile, CNN Money, 20 Apr. 2026
Vanderpump Rules was basically built on Schroeder’s distaste for Shay (and on the male cast’s constant infidelity).
—Bethy Squires, Vulture, 19 Apr. 2026
She was eventually consumed by his infidelities.
—Álex Ander, Vanity Fair, 17 Apr. 2026
Otake said Gerhardt Konig was not someone who would try to commit murder, but someone who was struggling with infidelity and trying to do his best.
—Jennifer Sinco Kelleher, Los Angeles Times, 9 Apr. 2026
See All Example Sentences for infidelity
Recent Examples of Synonyms for infidelity
Noun
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The Bible teaches that lying, stealing, adultery and coveting your neighbor’s property are sins.—
Sun Sentinel Editorial Board,
Sun Sentinel,
16 Mar. 2026
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The facile novelty of adultery is its own mask, a sexy way of dressing up a deep, frightened longing for security.—
Sara Holdren,
Vulture,
6 Mar. 2026
Noun
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The friendship betrayal/love triangle of Ciara Miller, West Wilson, and Amanda Batula is still being dissected through thousands of TikTok and Instagram comments.—
Bethy Squires,
Vulture,
30 Apr. 2026
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The betrayal of Zambada sparked a vicious battle for control of the Sinaloa cartel that has resulted in thousands of deaths.—
Kate Linthicum,
Los Angeles Times,
30 Apr. 2026
Noun
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Denise Paul Hatch, a former Center Township constable, is appealing her 2024 felony conviction for official misconduct.—
Robert Yoon,
Chicago Tribune,
4 May 2026
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That includes requiring real-time or near real-time reporting of financial transactions, increasing penalties for violations of the STOCK Act, and empowering an independent enforcement body, not Congress itself, to investigate and prosecute misconduct.—
Linh Tat,
Oc Register,
4 May 2026
Noun
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Upon learning of Ava’s treachery, Deborah HOWLS.—
Jessica M. Goldstein,
Vulture,
1 May 2026
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Inflamed by Ratansen’s adviser’s account of Padmavati’s beauty, Alauddin Khalji storms the fortress by treachery rather than valor.—
Encyclopedia Britannica,
Encyclopedia Britannica,
9 Apr. 2026
Noun
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But, Keoghan said, the masses primarily only saw the first video, which fueled the widespread cheating rumors about him.—
Rachel Raposas,
PEOPLE,
28 Apr. 2026
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But even for in-person classes, adaptations to prevent LLM cheating are often concessions that reduce pedagogical quality.—
ArsTechnica,
ArsTechnica,
13 Apr. 2026
Noun
-
In 2004, Skripal was arrested on charges of treason.—
Nick Tabor,
Encyclopedia Britannica,
29 Apr. 2026
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Under existing law, lawmakers can lose their pensions if convicted of a federal crime that relates to public corruption, espionage, treason or several other national security offenses.—
Anna Liss-Roy The Washington Post,
Arkansas Online,
27 Apr. 2026
Cite this Entry
“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 7 May. 2026.
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