1
as in adultery
lack of faithfulness especially to one's husband or wife
infidelity can lead to divorce
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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
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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
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Example Sentences
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Recent Examples of infidelity
Fans were outraged when rumors of infidelity on the Irish actor’s part began to circulate.
—
Fleurine Tideman, Glamour, 23 Mar. 2026
Sullivan also accused Morgan’s wife, the journalist and author Celia Walden, of pining for infidelity in her social media posts.
—Jake Kanter, Deadline, 19 Mar. 2026
Josh apologized for marital infidelity and a pornography addiction at the time and sought treatment.
—Brie Stimson, FOXNews.com, 19 Mar. 2026
All the secrets pour out, the revelations of infidelity and addiction and so on, as the group gives vent to the stuff that’s previously been unsayable—not to fix anything, mind you, since some things can’t be fixed.
—Emily Nussbaum, New Yorker, 12 Mar. 2026
See All Example Sentences for infidelity
Fleurine Tideman, Glamour, 23 Mar. 2026
Sullivan also accused Morgan’s wife, the journalist and author Celia Walden, of pining for infidelity in her social media posts.
—Jake Kanter, Deadline, 19 Mar. 2026
Josh apologized for marital infidelity and a pornography addiction at the time and sought treatment.
—Brie Stimson, FOXNews.com, 19 Mar. 2026
All the secrets pour out, the revelations of infidelity and addiction and so on, as the group gives vent to the stuff that’s previously been unsayable—not to fix anything, mind you, since some things can’t be fixed.
—Emily Nussbaum, New Yorker, 12 Mar. 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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While some conservatives have described the war as a betrayal, many other Republicans have cheered on the president’s actions.—
Michelle L. Price,
Los Angeles Times,
1 Apr. 2026
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The result is a second victimization — spiritual betrayal by those called to protect.—
Ed Gaskin,
Boston Herald,
29 Mar. 2026
Noun
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Ortega said she was motivated to introduce AB 2321 because of what the auditor reported about Cal-OSHA’s Bureau of Investigation, the unit responsible for investigating death and career-ending injuries for criminal misconduct.—
Joe Rubin,
Sacbee.com,
6 Apr. 2026
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The news that someone was seen with him has, of course, been received with a lot of interest, particularly considering that since his arrest for suspicion of misconduct in public office, neither his ex, Sarah Ferguson, nor his daughters, Princess Eugenie and Princess Beatrice, have visited him.—
Lizzie Lanuza,
StyleCaster,
6 Apr. 2026
Noun
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Undocumented immigrants venture from Mexico, often underestimating of the treachery of the landscape.—
Shi En Kim,
AZCentral.com,
26 Mar. 2026
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Jonathan Cute kept probing the murky realms between tourism and treachery.—
Adam Ciralsky,
Vanity Fair,
19 Mar. 2026
Noun
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There seems to be a widespread perception that musicians who use artificial intelligence are engaged in a form of cheating.—
Kelefa Sanneh,
New Yorker,
30 Mar. 2026
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There is no rampant cheating or election fraud in California.—
Mark Z. Barabak,
Mercury News,
26 Mar. 2026
Noun
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Consider this evilmeister’s brazen acts of treason and revenge, unbounded deceit, swinish immorality and negative role modeling.—
Voice of the People,
New York Daily News,
5 Apr. 2026
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She was imprisoned in Salimgarh Fort (a part of Red Fort) in Delhi by her father for more than 20 years for inciting her brother, Muhammad Akbar, to commit treason.—
Tamanna Nangia,
Encyclopedia Britannica,
2 Apr. 2026
Cite this Entry
“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 9 Apr. 2026.
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