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
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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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Our Extraordinary Summer by Lori Wilde Estranged sisters Calista and Athena Dempsey are forced to reunite on Hobby Island after their mother’s death, confronting old betrayals and unhealed wounds.—
Kait Hanson,
Southern Living,
2 May 2026
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Andrew Spar, president of the Florida Education Association, an umbrella organization for the local unions, quickly criticized the bill as a betrayal of working-class Floridians.—
Jeffrey S. Solochek,
Miami Herald,
1 May 2026
Noun
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The committee has established a special investigative subcommittee to examine whether Mills engaged in conduct that could include improper relationships, financial misconduct, or abuse of his official position.—
Nik Popli,
Time,
11 May 2026
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In the months that followed, former students began filing lawsuits alleging abuse and misconduct at the program.—
Rachel Hale,
USA Today,
11 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
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She had been imprisoned for more than a year on charges of treason stemming from a $52 donation to a charity aiding Ukraine.—
Christopher Cann,
USA Today,
10 May 2026
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These laws required individuals accused of treason to appear in court and defend themselves.—
Kimberly Nath,
The Conversation,
7 May 2026
Cite this Entry
“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 14 May. 2026.
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