1
as in infidelity
lack of faithfulness especially to one's husband or wife
he eventually forgave his wife's unfaithfulness
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 jaw-dropping unfaithfulness of the person she had considered her best friend was deeply hurtful
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in adultery
a sexual encounter or relationship between a married person and someone other than their spouse
there were charges of unfaithfulness on both sides
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for unfaithfulness
Noun
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Season 2 finds the couple becoming the talk of the town after a cast trip to Vanderpump Villa leaves Demi facing accusations of infidelity.—
Angela Andaloro,
People.com,
15 May 2025 -
This case is about love, jealousy, infidelity and money.—
Jenna Sundel
Joshua Rhett Miller,
MSNBC Newsweek,
15 May 2025
Noun
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Blasting his policies as a betrayal of the nation’s founding principles, the former vice president warned of a looming constitutional crisis.—
Seema Mehta,
Los Angeles Times,
12 May 2025
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The top Senate Democrat's support for the bill moving forward, in which he was joined by nine other members of the chamber's Democratic Caucus, prevented a government shutdown, but was seen by many in his party as a betrayal.—
Jason Lemon,
MSNBC Newsweek,
10 May 2025
Noun
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In the court of public opinion, any credible allegation of drug use, adultery or moral misstep is typically perceived as career-ending.—
Patrick Brzeski,
HollywoodReporter,
21 May 2025
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Mlotek’s title presumably comes from no-fault divorce laws, which did away with the idea that divorce required proof of wrongdoing, such as abuse or adultery.—
Hannah Jocelyn,
New Yorker,
26 Mar. 2025
Noun
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Press play below to learn more about Wells’ treachery, and to get a sneak peek at the fugitive interacting with her latest target.—
Matt Webb Mitovich,
TVLine,
7 Apr. 2025
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Sinners is one of the great vampire movies of the modern age, mining the legend of these perpetual outsiders who desperately yearn to belong, but whose silky promises are rooted in treachery.—
Stephanie Zacharek,
Time,
29 Apr. 2025
Noun
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The business-as-usual approach dovetails with a year of acts from Brand New to Ryan Adams looking to put a wide range of allegations of misconduct in the rearview mirror by giving diehards a show of talent to talk about instead and little else.—
Craig Jenkins,
Vulture,
13 May 2025
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Substantial misconduct, Murphy said in the filing, can also warrant the disqualification of a prosecutor.—
Grethel Aguila,
Miami Herald,
12 May 2025
Noun
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Because this is borderline treason in Dear Leader's world.—
Paul Du Quenoy,
MSNBC Newsweek,
27 Mar. 2025
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Yoon has presidential immunity from most criminal prosecutions but that doesn't cover grave charges like rebellion and treason.—
arkansasonline.com,
arkansasonline.com,
9 Mar. 2025
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Cite this Entry
“Unfaithfulness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfaithfulness. Accessed 28 May. 2025.
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