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perfidiousness

noun

Definition of perfidiousnessnext
as in infidelity
lack of faithfulness especially to one's husband or wife perfidiousness eventually led to the couple's divorce

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

Recent Examples of Synonyms for perfidiousness
  1. infidelity
  2. adultery
  3. betrayal
  4. perfidy
  5. disloyalty
Noun
  • 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
  • Decades later, the first couple of rock and roll briefly split in 2016 after rumors of infidelity, but reconciled shortly thereafter.
    — Grace Gavilanes, PEOPLE, 20 Aug. 2026
Definition of infidelity
Noun
  • For one thing covetousness, as opposed to the more concrete sins like theft or murder or adultery, is a thought crime, and almost all that goes on here, happens within the minds of the characters.
    — Jessica Kiang, Variety, 6 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
  • This included finding stretches of joy amid the pain, and coming to understand her flaws without judgment or fear; in all that, the movie reveals how Tessa could’ve fallen for a charming guy like Julian before his violent betrayal.
    — David Canfield, HollywoodReporter, 11 Sep. 2026
  • When the crown proves capable of betrayal, Garfield sees the break as spiritual as much as political.
    — JP Mangalindan, Time, 11 Sep. 2026
Definition of betrayal
Noun
  • Platner, indeed, has boiled down nearly all political problems to the perfidy of sinister oligarchs.
    — Jonathan Chait, The Atlantic, 6 July 2026
  • If the landing had been faked, the Soviets would have figured it out and would have loved to reveal to the world America’s perfidy.
    — Encyclopedia Britannica, Encyclopedia Britannica, 14 May 2026
Definition of perfidy
Noun
  • Law professor Sahar Aziz has documented how, in the post-9/11 era, visible Muslim identity increasingly came to be associated with foreignness and political disloyalty.
    — Asma Uddin, The Conversation, 31 Aug. 2026
  • Leaders can maintain alumni relationships, make re-entry culturally acceptable and ensure hiring processes do not automatically treat departure as disloyalty.
    — Sheila Callaham, Forbes.com, 29 Aug. 2026
Definition of disloyalty
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.

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perfidious
perfidiousness
perfidy
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Cite this Entry

“Perfidiousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perfidiousness. Accessed 15 Sep. 2026.

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