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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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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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“Perfidy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perfidy. Accessed 22 Apr. 2021.
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The first known use of perfidy was in 1592
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