Thesaurus

perfidy

noun

Synonyms & Antonyms of perfidy

1 lack of faithfulness especially to one's husband or wife
  • his wife's perfidy was a moment of uncharacteristic weakness

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Antonyms for perfidy

2 the act or fact of violating the trust or confidence of another
  • the full cost—both in compromised intelligence and in human life—of the double agent's perfidy is not yet known

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The first known use of perfidy was in 1592

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Cite this Entry

“Perfidy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perfidy. Accessed 26 Feb. 2020.

More from Merriam-Webster on perfidy

Dictionary: Definition of perfidy

Nglish: Translation of perfidy for Spanish Speakers

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