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

For many older Russians, memories of World War II consist mainly of Western perfidy and Russian indomitability.

From Washington Post • Apr. 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

Through the loosely placed boards in the wall floated the bark and jabber of a talk-radio show about the latest soccer perfidy from Argentina, Brazil’s hated rival.

From "1491" by Charles C. Mann

perfidy

Example Sentences

Related Words