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
When asked about his infidelity, Lægreid’s teammate Johannes Dale-Skjevdal said some fellow athletes were aware of the incident.
—
Angela Yang, NBC news, 10 Feb. 2026
Factors in the split included Bill’s links to Epstein and his infidelity.
—Rachel Burchfield, InStyle, 5 Feb. 2026
Singer Billie Eilish — one of Wasserman’s clients at his entertainment agency — stepped away from his firm because of the infidelity allegations, according to the Hollywood Reporter.
—Dakota Smith, Los Angeles Times, 5 Feb. 2026
One couple will discover infidelity.
—Marta Balaga, Variety, 29 Jan. 2026
See All Example Sentences for infidelity
Angela Yang, NBC news, 10 Feb. 2026
Factors in the split included Bill’s links to Epstein and his infidelity.
—Rachel Burchfield, InStyle, 5 Feb. 2026
Singer Billie Eilish — one of Wasserman’s clients at his entertainment agency — stepped away from his firm because of the infidelity allegations, according to the Hollywood Reporter.
—Dakota Smith, Los Angeles Times, 5 Feb. 2026
One couple will discover infidelity.
—Marta Balaga, Variety, 29 Jan. 2026
See All Example Sentences for infidelity
Recent Examples of Synonyms for infidelity
Noun
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Advertisement Both Paxton’s baggage and his history of using his office to troll Democrats is a central feature in the Republican primary, which has devolved into a barrage of personal attacks of betrayal, adultery, and corruption.—
Philip Elliott,
Time,
10 Feb. 2026
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Ken Paxton, a Republican running for the Senate, denied the adultery allegations.—
Jane Harper,
Dallas Morning News,
15 Jan. 2026
Noun
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Each day is a gamble of life and death, hope and betrayal; friendships run deep and can be shattered in an instant.—
Ashlee Conour,
Chicago Tribune,
19 Feb. 2026
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Based on Araminta Hall’s novel of the same name, the series explores a crime that shatters a decades-long friendship between three women, delving into guilt, retribution, love, betrayal and life-altering compromises.—
Kennedy French,
Variety,
18 Feb. 2026
Noun
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Sappenfield was permanently banned by the United States Center for SafeSport in May 2024 for physical and emotional misconduct, retaliation, abuse of process, and failure to report a potential SafeSport violation.—
Scott M. Reid,
Oc Register,
16 Feb. 2026
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Sought book on prosecutorial misconduct In the bulk of his conversations, Nathan detailed the misery of jail life.—
Grethel Aguila,
Miami Herald,
15 Feb. 2026
Noun
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Perfidy — from the French perfidie via the Latin perfidia — means deceitfulness, treachery or a breach of faith or promise.—
Harmeet Kaur,
CNN Money,
21 Jan. 2026
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But despite all this, not every Chelsea fan outside his family will regard this transfer as treachery.—
Simon Johnson,
New York Times,
17 Jan. 2026
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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According to the Security Service of Ukraine (SBU), investigators have opened more than 3,800 treason investigations since Russia launched its full-scale invasion in February 2022, with more than 1,200 individuals already found guilty and sentenced.—
Daria Tarasova-Markina,
CNN Money,
11 Feb. 2026
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Her testimony also alleges that prosecutors blocked her from testifying in civilian court and that she was transferred to military jurisdiction, accused of crimes including treason, rebellion and terrorism.—
Antonio María Delgado,
Miami Herald,
10 Feb. 2026
Cite this Entry
“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 21 Feb. 2026.
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