1
as in infidelity
lack of faithfulness especially to one's husband or wife
his wife's perfidy was a moment of uncharacteristic weakness
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in treachery
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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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of perfidy
Those intrepid few who still clung to the belief that American perfidy shielded Duke’s players from true justice just had the rug pulled out from under them by Mangum herself.
—
The Editors, National Review, 17 Dec. 2024
All of these glinty and high-relief performances leave the central figure seeming—despite his own foul perfidies—not exactly innocent, but without control.
—Richard Brody, The New Yorker, 10 Oct. 2024
Jane’s fiercely unforgiving tone was adopted by militant Irish nationalists for whom the famine stood as the ultimate proof of English perfidy.
—Fintan O'Toole, The New Yorker, 10 Mar. 2025
Those intrepid few who still clung to the belief that American perfidy shielded Duke’s players from true justice just had the rug pulled out from under them by Mangum herself.
—The Editors, National Review, 17 Dec. 2024
See All Example Sentences for perfidy
The Editors, National Review, 17 Dec. 2024
All of these glinty and high-relief performances leave the central figure seeming—despite his own foul perfidies—not exactly innocent, but without control.
—Richard Brody, The New Yorker, 10 Oct. 2024
Jane’s fiercely unforgiving tone was adopted by militant Irish nationalists for whom the famine stood as the ultimate proof of English perfidy.
—Fintan O'Toole, The New Yorker, 10 Mar. 2025
Those intrepid few who still clung to the belief that American perfidy shielded Duke’s players from true justice just had the rug pulled out from under them by Mangum herself.
—The Editors, National Review, 17 Dec. 2024
See All Example Sentences for perfidy
Recent Examples of Synonyms for perfidy
Noun
-
This case is about love, jealousy, infidelity and money.—
Jenna Sundel
Joshua Rhett Miller,
MSNBC Newsweek,
15 May 2025
-
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
Noun
-
Press play below to learn more about Wells’ treachery, and to get a sneak peek at the fugitive interacting with her latest target.—
Matt Webb Mitovich,
TVLine,
7 Apr. 2025
-
Sinners is one of the great vampire movies of the modern age, mining the legend of these perpetual outsiders who desperately yearn to belong, but whose silky promises are rooted in treachery.—
Stephanie Zacharek,
Time,
29 Apr. 2025
Noun
-
The synopsis reads: 1972: The Ecclesiastical Court of Santiago de Compostela convicted Sagrario Fra, a shellfish harvester in Ferrol, for committing adultery.—
Zac Ntim,
Deadline,
31 July 2024
-
There’s adultery and cuckoldry and suspicions of adultery and cuckoldry and doubles and all the other good Cronenbergian ideas.—
Bilge Ebiri,
Vulture,
17 Apr. 2025
Noun
-
Blasting his policies as a betrayal of the nation’s founding principles, the former vice president warned of a looming constitutional crisis.—
Seema Mehta,
Los Angeles Times,
12 May 2025
-
The top Senate Democrat's support for the bill moving forward, in which he was joined by nine other members of the chamber's Democratic Caucus, prevented a government shutdown, but was seen by many in his party as a betrayal.—
Jason Lemon,
MSNBC Newsweek,
10 May 2025
Noun
-
The message is unmistakable: disloyalty to the narrative will be punished.—
Tony Bradley,
Forbes.com,
18 Apr. 2025
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The Game is speaking up after the controversial figure attempted to call him out for disloyalty on X/Twitter.—
Jessica Bennett,
VIBE.com,
14 Apr. 2025
Noun
-
Because this is borderline treason in Dear Leader's world.—
Paul Du Quenoy,
MSNBC Newsweek,
27 Mar. 2025
-
Yoon has presidential immunity from most criminal prosecutions but that doesn't cover grave charges like rebellion and treason.—
arkansasonline.com,
arkansasonline.com,
9 Mar. 2025
Cite this Entry
“Perfidy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perfidy. Accessed 21 May. 2025.
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