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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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

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 Skratch also interviewed other sources for its story who hinted at potential infidelity by Mickelson amid abrupt endings of memberships at other golf clubs. — Ryan Morik, FOXNews.com, 2 July 2026 The woman told investigators that Bernadette had begun to suspect Vander Meer of infidelity, but their relationship, which included secret phones and meetings at pay-by-the-hour motels, continued. — James Powel, USA Today, 26 June 2026 There’s friction between the defense lawyer Sam (Nick Nolte) and his wife, Leigh (Jessica Lange), rooted in Sam’s past infidelity and his current flirtations with a young courthouse clerk who idolizes him. — Scott Tobias, Vulture, 26 June 2026 Despite the milestone, it was overshadowed by growing reports of marital strain and ongoing speculation about infidelity. — Elle Meier, InStyle, 13 June 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
  • Hundreds of pages of filings in a civil lawsuit and countersuit detail allegations of fraud and elder abuse, years of adultery, and a battle for property, luxury sports cars and cash.
    — Amber Gaudet, Charlotte Observer, 10 July 2026
  • In addition to being accused of adultery by his estranged wife, Paxton, a staunch MAGA ally, has faced felony securities fraud charges, an FBI investigation into corruption and state impeachment hearings that ended in an acquittal.
    — Meredith Kile, PEOPLE, 7 July 2026
Definition of adultery
Noun
  • Ultimately, the reassurances about community resources and air quality failed to quell the fury inside the room as residents took the microphone during the Q&A section and repeatedly expressed feelings of betrayal and mistrust.
    — Clara Harter, Los Angeles Times, 10 July 2026
  • Cupertino, which is slated to premiere in the fall on CBS, follows a former tech lawyer (Colter) who, after experiencing a betrayal from his former employer, teams up with another attorney to represent underdogs in litigation against tech giants.
    — Katie Kilkenny, HollywoodReporter, 10 July 2026
Definition of betrayal
Noun
  • The New York City Department of Investigation is the city’s independent watchdog agency, which investigates fraud, corruption, misconduct, municipal malfeasance, city employees, contractors, and individuals who do business with the city.
    — Gloria Pazmino, CNN Money, 11 July 2026
  • During this weekend in Nantucket, Brooke decides to leave her husband, Charlie, amid his workplace misconduct allegations.
    — Max Gao, Variety, 11 July 2026
Definition of misconduct
Noun
  • Guides spoke of the monthlong siege that ended only because of the treachery of a local noble who turned on the sultan and allowed British troops to scale the walls.
    — Ishaan Tharoor, New Yorker, 2 July 2026
  • This is not treachery but the truest and noblest affection.
    — Ann Manov, Harpers Magazine, 23 June 2026
Definition of treachery
Noun
  • The professor was horrified by what appeared to be massive cheating in his course—cheating that was preventing most of the students from learning the material.
    — Nate Anderson, ArsTechnica, 8 July 2026
  • The central educational challenge of the coming decade is therefore not simply preventing cheating, but rebuilding cultures in which learning itself is once again perceived as inherently valuable, personally transformative, and socially essential.
    — Jason Benedict, Fortune, 7 July 2026
Definition of cheating
Noun
  • What constitutes treason is emerging as an early theme of House of the Dragon’s third season.
    — Amanda Whiting, Vulture, 29 June 2026
  • His attorney, Erias Lukwago, was taken from his house and later charged with an offense related to the concealment of treason.
    — Rodney Muhumuza, Los Angeles Times, 29 June 2026
Definition of treason

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infidelity
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Cite this Entry

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

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Nglish: Translation of infidelity for Spanish Speakers

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