infidelity

noun

ˌin-fə-ˈde-lə-tē How to pronounce infidelity (audio)
Definition of infidelitynext
1
as in adultery
lack of faithfulness especially to one's husband or wife infidelity can lead to divorce

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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

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of infidelity The garment, which went on public display Friday at Sotheby’s in London, was worn by Diana on June 29, 1994, the broadcast date of an interview in which the then-Prince Charles acknowledged infidelity. — ABC News, 18 Sep. 2026 Just days later, Bullock and James separated following reports of his infidelity, and Bullock raised Louis as a single mom. — Allison Degrushe, StyleCaster, 15 Sep. 2026 Zvyagintsev’s story, like Chabrol’s, imagines the tragic fallout of a husband discovering his wife’s infidelity. — David Canfield, HollywoodReporter, 14 Sep. 2026 His relationship with his wife (Anna Faris) and kids is disintegrating and a National Enquirer journo keeps threatening to run an exposé of his infidelities. — Jessica Kiang, Variety, 5 Sep. 2026 See All Example Sentences for infidelity
Recent Examples of Synonyms for infidelity
  1. adultery
  2. betrayal
  3. misconduct
  4. treachery
  5. cheating
  6. treason
Noun
  • The Royal Family, whose relations with Spencer have long been strained, are said to fear the book could contain numerous bombshells about Charles and Diana’s relationship, which was infamously plagued by adultery and acrimony.
    — K.J. Yossman, Variety, 17 Sep. 2026
  • Its citizens held slaves, some of whom were shackled for committing adultery.
    — Boris Kachka, The Atlantic, 4 Sep. 2026
Definition of adultery
Noun
  • As the formidable duo fights for the throne of Norway, the land is ripped apart by rivalries, loyalties and betrayals.
    — Mya Copeland, Variety, 9 Oct. 2026
  • Based on a true story, the film follows a young woman whose romance with a married man sets off a dangerous chain of obsession, jealousy and betrayal.
    — Tony Maglio, HollywoodReporter, 8 Oct. 2026
Definition of betrayal
Noun
  • The reports come after misconduct findings against some interfraternity chapters in the spring and multiple criminal investigations, according to the letter.
    — Arkansas Online, Arkansas Online, 8 Oct. 2026
  • British police acknowledged applying for the warrants under the wrong statutory provision, the judge said while stipulating that the misconduct investigation against the king's brother could continue.
    — Steve Hendrix, Washington Post, 8 Oct. 2026
Definition of misconduct
Noun
  • Was there a whiff of treachery among this crew, someone who might betray them to the Germans?
    — Literary Hub, Literary Hub, 31 Aug. 2026
  • For his treachery in conspiring with Gwayne, Daemon claims Corlys as his own prisoner.
    — Amanda Whiting, Vulture, 10 Aug. 2026
Definition of treachery
Noun
  • The league urged the Supreme Court to resolve the split, arguing that conflicting rulings leave oversight unclear and raise concerns about cheating, insider trading, and consumer protection.
    — Camila Grigera Naón, Fortune, 8 Oct. 2026
  • Parents, educators and child development experts have been sounding alarms over children’s use of AI chatbots, which have been blamed for facilitating cheating on schoolwork and even suicide.
    — ABC News, ABC News, 7 Oct. 2026
Definition of cheating
Noun
  • When a pair of Israeli filmmakers released a documentary last month about civilian deaths in Gaza, party leaders across the spectrum, including Eisenkot, accused them of treason.
    — Arkansas Online, Arkansas Online, 8 Oct. 2026
  • In 1990, senior West German counterintelligence official Klaus Kuron was ​exposed as a Stasi spy and later convicted of treason.
    — Reuters, NBC news, 7 Oct. 2026
Definition of treason

Browse Nearby Words

infidelities
infidelity
infidels
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Cite this Entry

“Infidelity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infidelity. Accessed 14 Oct. 2026.

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