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
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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
Authorities painted a picture of fights and arguments — including when Ashley accused him of infidelity — that ratcheted up to the killings.
—
Meredith Colias-Pete, Chicago Tribune, 28 Apr. 2026
But instead of paving the way for some good ol’ fashioned infidelity, the liquid courage causes the women to turn on each other, with the evening devolving into inebriated insults and recriminations.
—Brent Lang, Variety, 20 Apr. 2026
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
She was eventually consumed by his infidelities.
—Álex Ander, Vanity Fair, 17 Apr. 2026
See All Example Sentences for infidelity
Meredith Colias-Pete, Chicago Tribune, 28 Apr. 2026
But instead of paving the way for some good ol’ fashioned infidelity, the liquid courage causes the women to turn on each other, with the evening devolving into inebriated insults and recriminations.
—Brent Lang, Variety, 20 Apr. 2026
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
She was eventually consumed by his infidelities.
—Álex Ander, Vanity Fair, 17 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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But somewhere along the way, a portion of the WNBA ecosystem — fans, players and even some media members — started treating criticism as betrayal.—
Amber Harding OutKick,
FOXNews.com,
14 May 2026
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The sequel series is based on similar – and familiar – concepts of love, loyalty and betrayal, once again set in the mafia underworld.—
Jesse Whittock,
Deadline,
14 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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Nah, my dreams of us are probably better anyway - cheating?—
Sean Joseph OutKick,
FOXNews.com,
14 May 2026
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And according to the data, most of this cheating is done with generative AI.—
Nate Anderson,
ArsTechnica,
13 May 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 17 May. 2026.
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