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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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of infidelity
Around that time is when Epstein learned about Gates' infidelities.
—
Marina Watts, Entertainment Weekly, 10 June 2026
At one point, Gates testified that Epstein used his infidelity to his wife Melinda Gates to try to keep their relationship intact.
—Lauren Green, The Washington Examiner, 10 June 2026
Betrayals and scandals like this are endemic to reality TV; the Bravoverse in particular is still living in the long shadow of 2023’s Scandoval, the tectonic collapse inside Vanderpump Rules that was also fueled by inter-group infidelity.
—Kathryn Vanarendonk, Vulture, 10 June 2026
To maximize their chances to claim the Senate, Democrats want to keep Maine in play, and there’s no indication yet that stories about Platner’s infidelities or his tattoo of a Nazi image are destroying his candidacy.
—Burgess Everett, semafor.com, 10 June 2026
See All Example Sentences for infidelity
Marina Watts, Entertainment Weekly, 10 June 2026
At one point, Gates testified that Epstein used his infidelity to his wife Melinda Gates to try to keep their relationship intact.
—Lauren Green, The Washington Examiner, 10 June 2026
Betrayals and scandals like this are endemic to reality TV; the Bravoverse in particular is still living in the long shadow of 2023’s Scandoval, the tectonic collapse inside Vanderpump Rules that was also fueled by inter-group infidelity.
—Kathryn Vanarendonk, Vulture, 10 June 2026
To maximize their chances to claim the Senate, Democrats want to keep Maine in play, and there’s no indication yet that stories about Platner’s infidelities or his tattoo of a Nazi image are destroying his candidacy.
—Burgess Everett, semafor.com, 10 June 2026
See All Example Sentences for infidelity
Recent Examples of Synonyms for infidelity
Noun
-
The filings alleged adultery as the reason behind the divorce.—
Brandi D. Addison,
USA Today,
1 June 2026
-
Public opinion is against adultery.—
Louis Menand,
New Yorker,
1 June 2026
Noun
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Figo famously made the ultimate betrayal in 2000 when Perez became Real Madrid president for the first time.—
Tom Sanderson,
Forbes.com,
18 June 2026
-
His jealousy provokes an act of betrayal and cruelty.—
Stephanie Zacharek,
Time,
18 June 2026
Noun
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Newton reportedly stole a computer, and there were allegations of academic misconduct.—
Mac Engel
June 15,
Fort Worth Star-Telegram,
15 June 2026
-
Political expediency, like political misconduct, is not limited to any one party.—
Clarence Page,
Chicago Tribune,
15 June 2026
Noun
-
Peacock’s adventures in treachery The Traitors was the top dog, scoring five prizes including Best Competition Series and Best Host for Alan Cumming.—
Erik Pedersen,
Deadline,
3 June 2026
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Upon learning of Ava’s treachery, Deborah HOWLS.—
Jessica M. Goldstein,
Vulture,
1 May 2026
Noun
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Other research on high school cheating found in 2020 that 64% of 70,000 high school students across the country admitted to cheating on a test, and 58% admitted to plagiarism.—
Austin Sarat,
The Conversation,
17 June 2026
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Whatever romance Rodrigo is tracing the history of apparently did not end in cheating or any other horrible behavior that would lead her back toward the kind of recriminatory rockers that were among the previous albums’ highlights.—
Chris Willman,
Variety,
12 June 2026
Noun
-
War complicates the domestic front, turning any dissent into treason.—
Mohammed Sergie,
semafor.com,
15 June 2026
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On this day in 1964, eight activist leaders were sentenced to life imprisonment for treason, sabotage, and conspiracy against South Africa’s apartheid government.—
Encyclopedia Britannica,
Encyclopedia Britannica,
9 June 2026
Cite this Entry
“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 23 Jun. 2026.
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