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Definitions

perfidious

[per-fid-ee-uhs] / pərˈfɪd i əs /


Example Sentences

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Samuel Pepys knew him; the British diarist thought him “a perfidious rogue.”

From The Wall Street Journal ● Mar. 11, 2026

The head of one of them, who preferred to remain anonymous, described it as a "perfidious and effective" strategy.

From Barron's ● Nov. 1, 2025

“If the initial findings are confirmed, it will be a perfidious attack on our electricity infrastructure,” Stübgen said.

From Seattle Times ● Mar. 5, 2024

Nick Davis grew up with the Mankiewicz legend: great Herman and perfidious Joe.

From Los Angeles Times ● May 17, 2022

“Behold, campers, this vile and destructive creature! This killer of songbirds! This murderer of chipmunks! This perfidious predator!”

From "Klawde: Evil Alien Warlord Cat" by Johnny Marciano and Emily Chenoweth


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