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Showing results for perfidy.
Definitions

perfidy

[pur-fi-dee] / ˈpɜr fɪ di /
NOUN
treachery
Synonyms
STRONG
betrayal bunco corruption disaffection dodge double-dealing duplicity faithlessness fake falseness flimflam infidelity perfidiousness put on racket scam sellout spoof treason whitewash
WEAK
dirty dealing dirty pool dirty trick dirty work double-cross fast shuffle grift recreancy shell game skin game stab in the back sweet-talk treacherousness two-timing
Antonyms
STRONG
faithfulness fidelity forthrightness harmony honesty loyalty truthfulness
NOUN
faithlessness
Synonyms
STRONG
betrayal disbelief dishonesty disloyalty doubt falseness falsity fickleness fraud inconstancy infidelity perfidiousness skepticism traitorousness treachery treason unfaithfulness
WEAK
false-heartedness treacherousness
Antonyms
STRONG
belief devotion fairness faithfulness fidelity honesty loyalty trust truthfulness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He has persisted in insulting the leaders of these countries for failing to bail him out of his jam, writing long screeds on social media that rail against their alleged perfidy.

From Salon • Mar. 19, 2026

Unaware of Samary’s perfidy, Gomina, 50, ordered Samary to meet him at QRF headquarters to organize a team to rescue Issa and his family.

From The Wall Street Journal • Mar. 12, 2026

Now, those who are convinced of the perfidy of cats won’t like the answers that are emerging.

From New York Times • Nov. 12, 2022

Bristling and increasingly convinced of Western perfidy and decadence, he was in many respects a changed man.

From Seattle Times • Mar. 26, 2022

At least Lester had the decency to weep at his act of perfidy.

From "The Tale of Despereaux: Being the Story of a Mouse, a Princess, Some Soup and a Spool of Thread" by Kate DiCamillo

Vocabulary lists containing perfidy

The Declaration of Independence

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A Web of Lies

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Excerpt from "The Declaration of Independence"

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