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
There has been rumored infidelity aimed at both parties in addition to other grievances.
—
Elizabeth Ayoola, Essence, 29 Dec. 2025
Following a two-year separation, as a result of mental health struggles and infidelity, Lennon and Ono reunited and released 1980’s Double Fantasy.
—Radhika Seth, Vogue, 19 Dec. 2025
In May of this year, Romanucci said, Rivera ended the relationship because of Baker's infidelity.
—Darius Johnson, CBS News, 11 Dec. 2025
Her subsequent attempts to uncover some sign of infidelity — or at least a scrap of emotional cheating to justify her own — make everyone so uncomfortable that Dylan eventually just calls it and tells everyone to leave.
—Caroline Framke, Vulture, 8 Dec. 2025
See All Example Sentences for infidelity
Elizabeth Ayoola, Essence, 29 Dec. 2025
Following a two-year separation, as a result of mental health struggles and infidelity, Lennon and Ono reunited and released 1980’s Double Fantasy.
—Radhika Seth, Vogue, 19 Dec. 2025
In May of this year, Romanucci said, Rivera ended the relationship because of Baker's infidelity.
—Darius Johnson, CBS News, 11 Dec. 2025
Her subsequent attempts to uncover some sign of infidelity — or at least a scrap of emotional cheating to justify her own — make everyone so uncomfortable that Dylan eventually just calls it and tells everyone to leave.
—Caroline Framke, Vulture, 8 Dec. 2025
See All Example Sentences for infidelity
Recent Examples of Synonyms for infidelity
Noun
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The book presents itself as a comic take on the classic adultery novel and a send-up of a narrow, self-conscious group of downwardly mobile New Yorkers.—
Literary Hub,
Literary Hub,
8 Jan. 2026
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The initial batch of documents showed that Angela Paxton sought the divorce on the grounds that Ken Paxton had committed adultery, but included no additional details.—
S.E. Jenkins,
CBS News,
19 Dec. 2025
Noun
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Truist details allegations against former bank executives Truist’s complaint paints a picture of betrayal and covert meetings preceding the exodus.—
Charlotte Observer,
Charlotte Observer,
29 Jan. 2026
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Tears are shed, betrayal is discussed, and awful makeovers are brought back to light.—
Victoria Uwumarogie,
Essence,
29 Jan. 2026
Noun
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Blind spots, poor image quality, and limited video retention undermine investigations and allow misconduct to go undetected or unprosecuted.—
Walter Pavlo,
Forbes.com,
27 Jan. 2026
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Progressives also have endorsed the reversal of qualified immunity protections, which shield agents from misconduct lawsuits.—
Ana Ceballos,
Los Angeles Times,
26 Jan. 2026
Noun
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With season 4 rapidly approaching, now's the time to prepare for the treachery to come.—
Randall Colburn,
Entertainment Weekly,
22 Dec. 2025
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Instead of being killed, Ashur takes Spartacus’ life and is consequently rewarded for his treachery by the Roman Empire.—
Aramide Tinubu,
Variety,
1 Dec. 2025
Noun
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An honor council, comprised of administrators, teachers, and members of the student government, would sit in judgment on cases of alleged cheating.—
Nell Freudenberger,
Harpers Magazine,
27 Jan. 2026
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In the wake of the cheating, FIS has modified its rules and brought in a coordinator to oversee screening of gear and hired former Austrian ski jumper Mathias Hafele to work as equipment expert.—
Brian Melley,
Chicago Tribune,
23 Jan. 2026
Noun
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The president’s team moved quickly to prosecute the sheriff for treason.—
Michael Scherer,
The Atlantic,
22 Jan. 2026
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Veteran opposition figure Kizza Besigye, a four-time presidential candidate, remains in prison after he was charged with treason last February.—
Los Angeles Times,
Los Angeles Times,
17 Jan. 2026
Cite this Entry
“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 31 Jan. 2026.
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