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
  • 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
  • Gripped by a paralyzing fear for the fate of her future children, Naama returns to the same monument where the infidelity took place; there, her parents appear before her.
    — Katie Campione, Deadline, 4 Aug. 2026
Definition of infidelity
Noun
  • Because of its unfiltered depictions of sexuality, inappropriate relationships, and adultery, the 1971 film received a chilly response in conservative communities; however, it was applauded by critics and earned eight Oscar nominations.
    — Air Mail, Air Mail, 22 Aug. 2026
  • Leontes, the king of Sicilia, has baselessly accused his wife, Hermione, of adultery, and the consequences have been dire.
    — Sara Holdren, Vulture, 12 Aug. 2026
Definition of adultery
Noun
  • The extremely soapy, enjoyably satirical true-life drama chronicles love, rampant betrayal and a brazen murder plot through three decades of the iconic Gucci fashion house.
    — Brian Truitt, USA Today, 28 Aug. 2026
  • That act of literary betrayal—the source of Kiyosaki’s fame and much of his wealth—is the enduring mystery of his life.
    — Christopher Cox, Vanity Fair, 26 Aug. 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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Cite this Entry

“Perfidiousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perfidiousness. Accessed 2 Sep. 2026.

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