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

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Example Sentences

Recent Examples of Synonyms for perfidiousness
  1. infidelity
  2. adultery
  3. betrayal
  4. perfidy
  5. disloyalty
Noun
  • Denver jurors are expected to hear this summer about the many allegations of infidelity, coercion, scheming and fraud that have divided one of the city’s most prominent families.
    — Justin Wingerter, The Denver Post, 10 Mar. 2025
  • Co-written by Gaines and Qasim Basir, The Dutchman stars André Holland as Clay, a successful Black man grappling with his wife Kaya’s (Zazie Beetz) infidelity, as well as his own self-perception versus how the world sees him because of the color of his skin.
    — Glenn Garner, Deadline, 8 Mar. 2025
Definition of infidelity
Noun
  • The faith is rooted in the Vedas, an ancient Hindu scripture and prescribes the five lifetime vows: no alcohol, no addictions, no adultery, no meat and no impurity of body and mind.
    — James Powel, USA TODAY, 9 Mar. 2025
  • Under Taliban rule, morality laws are strictly enforced, and activities considered immoral or against Islamic principles—such as pornography, adultery, or LGBTQ+ content—are harshly punished.
    — Dan Perry, Newsweek, 28 Feb. 2025
Definition of adultery
Noun
  • Ultimately, cost-inflicting behaviors are driven by the all-consuming fear of abandonment or betrayal.
    — Mark Travers, Forbes, 16 Mar. 2025
  • The top Senate Democrat's support for the bill moving forward, in which he was joined by nine other members of the chamber's Democratic Caucus, prevented a government shutdown, but was seen by many in his party as a betrayal.
    — Mark Davis, Newsweek, 15 Mar. 2025
Definition of betrayal
Noun
  • Jane’s fiercely unforgiving tone was adopted by militant Irish nationalists for whom the famine stood as the ultimate proof of English perfidy.
    — Fintan O'Toole, The New Yorker, 10 Mar. 2025
  • Those intrepid few who still clung to the belief that American perfidy shielded Duke’s players from true justice just had the rug pulled out from under them by Mangum herself.
    — The Editors, National Review, 17 Dec. 2024
Definition of perfidy
Noun
  • Similarly, alienating a President seemingly intent on smashing anything approaching dissent or disloyalty is not a risk many Washington institutions are willing to take at the moment.
    — Philip Elliott, TIME, 12 Feb. 2025
  • Another document, likely written by an officer, recorded acts of disloyalty by North Korean subordinates - a common practice in the totalitarian state, where citizens are encouraged to inform on each other.
    — Nick Paton Walsh, CNN, 28 Jan. 2025
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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“Perfidiousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perfidiousness. Accessed 25 Mar. 2025.

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