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 When Rusic filed for divorce the following May, accusing Cecchi Gori of physical abuse and infidelity, the painting became part of the fight. — Mattia Ferraresi, Air Mail, 3 Oct. 2026 Defense attorney Emily Smith argued the prosecution’s case lacked key evidence, including the murder weapon, and had little to stand on aside from his infidelity. — Nicki Brown, CNN Money, 29 Sep. 2026 By the end of Volume I, the court romance has devolved into a series of infidelities, both personal and political, which cause the corruption and destabilization of England’s fledgling democracy. — Eileen Hunt, Fortune, 28 Sep. 2026 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 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
  • Many crimes, including property crimes like burglary or moral sins such as adultery, were punishable by death in the American colonies.
    — Matthew Adams, Fort Worth Star-Telegram, 14 Oct. 2026
  • 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
Definition of adultery
Noun
  • In this painful experience, one is exposed (the betrayal that is blushing) and longs to hide oneself.
    — Eugenie Brinkema, ARTnews.com, 17 Oct. 2026
  • Someone to blame Burns knows the cost of Salem’s betrayals about as well as anyone.
    — Jennifer Byrne, Popular Science, 15 Oct. 2026
Definition of betrayal
Noun
  • The Justice Department has charged about 90 people for various types of election misconduct so far this year, including 50 who are said to have voted as noncitizens.
    — SAFIYAH RIDDLE, Arkansas Online, 15 Oct. 2026
  • SafeSport, a nonprofit established to prevent the abuse of athletes and address misconduct allegations, was dismissed as a defendant in two lawsuits filed by gymnasts that allege the organization did not properly investigate Gardner.
    — Steve Henson, Los Angeles Times, 15 Oct. 2026
Definition of misconduct
Noun
  • The killings and his six-week trial in 2023 captivated the true crime world with a mix of treachery, corruption, money, power and Southern accents.
    — Jeffrey Collins, Los Angeles Times, 16 Oct. 2026
  • The killings of Murdaugh’s wife and son and his subsequent six-week trial captivated the true crime world with a mix of treachery, corruption, money, power and Southern accents.
    — ABC News, ABC News, 16 Oct. 2026
Definition of treachery
Noun
  • The perception of cheating would likely cause trust in politics to crater even further.
    — Jon Allsop, New Yorker, 10 Oct. 2026
  • 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
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 20 Oct. 2026.

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