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
-
Nader reportedly ended things due to suspecting Savchenko of infidelity.—
Maureen Lee Lenker,
EW.com,
8 Apr. 2025 -
Not this evil man blaming Tracy for his infidelity!—
Emma Specter,
Vogue,
28 Mar. 2025
Noun
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But betrayals were happening inside their home, too.—
Kim Willis,
USA TODAY,
25 Mar. 2025
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For many customers, these changes represent a fundamental betrayal of what made Southwest different.—
Roger Dooley,
Forbes,
24 Mar. 2025
Noun
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But Barbara was never cut out to be a housewife and Nick’s adultery was a devastating blow.—
Patti Callahan Henry,
People.com,
16 Mar. 2025
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Texas law doesn't consider adultery to be a felony or misdemeanor.—
Marley Malenfant,
Austin American-Statesman,
9 Dec. 2024
Noun
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Because of that treachery Castor was a pure mortal, but Pollux was a half god.—
Mike Lynch,
Twin Cities,
6 Apr. 2025
-
After weeks of treachery and deception, the final roundtable has been viewed, and the winner or winners for The Traitors Season 3 have been revealed.—
Armando Tinoco,
Deadline,
6 Mar. 2025
Noun
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Instead, each case involved egregious misconduct, including the wholesale fabrication of news stories.—
ArsTechnica,
ArsTechnica,
7 Apr. 2025
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The Lost in Translation actor discussed the allegation of inappropriate misconduct that led to production halting Aziz Ansari's unfinished film Being Mortal and, later, an investigation.—
Wesley Stenzel,
EW.com,
5 Apr. 2025
Noun
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Buying American now seems like an act of treason here.—
Matthew J. Friedman,
CNN Money,
1 Apr. 2025
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Wolsey died in Season 1, but not before bequeathing his showcase to Henry, who returned the favor by accusing his chief minister of treason.—
Bryan Alexander,
USA Today,
30 Mar. 2025
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Cite this Entry
“Unfaithfulness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfaithfulness. Accessed 15 Apr. 2025.
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