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
Synonyms & Similar Words
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
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of infidelity
But Crane’s infidelity and Turner’s rising fame strained the relationship, leading to a 1944 divorce.
—
Declan Gallagher, Entertainment Weekly, 8 June 2026
Cherry plays Gary, a hapless, low-key type of guy who goes on a blind date, to avenge infidelity in his jaded long-term relationship, with the much younger, devil-may-care Ell, played by Borat breakout Maria Bakalova.
—Melanie Goodfellow, Deadline, 4 June 2026
As the general asks Desdemona (an impeccable Olivia Cygan) to retrieve her handkerchief — an apparent smoking gun of infidelity found in another man’s chambers — his wife promptly spirals and stalls.
—Thomas Floyd, Washington Post, 3 June 2026
Allegations of infidelity have followed Attorney General Ken Paxton while on the campaign trail.
—Eleanor Dearman, Fort Worth Star-Telegram, 2 June 2026
See All Example Sentences for infidelity
Declan Gallagher, Entertainment Weekly, 8 June 2026
Cherry plays Gary, a hapless, low-key type of guy who goes on a blind date, to avenge infidelity in his jaded long-term relationship, with the much younger, devil-may-care Ell, played by Borat breakout Maria Bakalova.
—Melanie Goodfellow, Deadline, 4 June 2026
As the general asks Desdemona (an impeccable Olivia Cygan) to retrieve her handkerchief — an apparent smoking gun of infidelity found in another man’s chambers — his wife promptly spirals and stalls.
—Thomas Floyd, Washington Post, 3 June 2026
Allegations of infidelity have followed Attorney General Ken Paxton while on the campaign trail.
—Eleanor Dearman, Fort Worth Star-Telegram, 2 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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In terms of the season finale, Harris was intent on treating that betrayal not as an obstacle quickly overcome, but that would set the stage for a new beginning for the characters.—
Lexy Perez,
HollywoodReporter,
11 June 2026
-
In season 3, Joe must walk the line between duty and her home life, as hidden networks, foreign operatives, and personal betrayals collide.—
Derek Lawrence,
Entertainment Weekly,
11 June 2026
Noun
-
No misconduct was issued to inmates during the incident in question, and no inmate faced discipline for refusing the assignment, the agency added.—
Paula Wethington,
CBS News,
8 June 2026
-
Even without independent investigative authority, the commission has spent the past few years reviewing a backlog of internal affairs cases, commissioning an outside audit of police misconduct investigations and weighing in on department policies.—
Kelly Davis,
San Diego Union-Tribune,
8 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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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
-
Just needed his seat in Congress despite his lying and cheating, kind of like the guy sitting in the White House.—
DP Opinion,
Denver Post,
8 June 2026
Noun
-
To punish rebels for their treason, Parliament passed the Restraining Act of 1775, banning New Englanders from fishing on the Atlantic Ocean.—
Christopher Magra,
The Conversation,
2 June 2026
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Avital was generating support for her husband, who had been arrested a year before and charged with treason, and other Soviet dissidents.—
Michael Arkush,
Twin Cities,
26 May 2026
Cite this Entry
“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 16 Jun. 2026.
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