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
Noun
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Season 2 finds the couple becoming the talk of the town after a cast trip to Vanderpump Villa leaves Demi facing accusations of infidelity.—
Angela Andaloro, People.com, 15 May 2025
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This case is about love, jealousy, infidelity and money.—
Noun
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In the court of public opinion, any credible allegation of drug use, adultery or moral misstep is typically perceived as career-ending.—
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Mlotek’s title presumably comes from no-fault divorce laws, which did away with the idea that divorce required proof of wrongdoing, such as abuse or adultery.—
Noun
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One professor challenged that reasoning, which Casas repeated during the panel on Wednesday, telling the police chief that for students with fragile immigration statuses, being detained by university police would feel like a betrayal.—
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In the aftermath, Mahnaz will be forced to confront betrayal and loss, and to embark on a quest for justice.—
Noun
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The prior month, Vice President JD Vance had lodged his own complaints about Europe’s alleged perfidy, threatening that the United States might withdraw its security guarantees from Europe if the EU continued to aggressively regulate U.S. tech companies.—
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Despite high trade deficits, the U.S. economy is strong Trump and his advisers point to America’s lopsided trade numbers—year after year of huge deficits—as proof of foreigners’ perfidy.—
Noun
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That's telling about the culture that was created in which questioning or stress-testing created suspicions of disloyalty.—
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In April, the president fired the head of the NSA after the conspiracist Laura Loomer accused him of disloyalty; in early May, the administration announced plans to cut more than a thousand jobs at the CIA and other spy agencies.—
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“Perfidiousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perfidiousness. Accessed 30 May. 2025.
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