perfidious
deliberately faithless; treacherous; deceitful: a perfidious lover.
Origin of perfidious
1Other words for perfidious
Opposites for perfidious
Other words from perfidious
- per·fid·i·ous·ly, adverb
- per·fid·i·ous·ness, noun
- un·per·fid·i·ous, adjective
- un·per·fid·i·ous·ly, adverb
- un·per·fid·i·ous·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use perfidious in a sentence
How dreadful, then, is it for sinners to speak to God perfidiously!
The Ordinance of Covenanting | John CunninghamAmong these captives was young Gustavus Vasa, who, thus perfidiously taken, was cruelly confined.
Historical Tales, Vol. 9 (of 15) | Charles MorrisFor it was long believed that Delauney had admitted the people into the first court, and then had perfidiously shot them down.
Lectures on the French Revolution | John Emerich Edward Dalberg-ActonThe Baron could, by a single word perfidiously repeated, injure him very much with Alba's mother.
Cosmopolis, Complete | Paul BourgetOn the testimony of his own letters it is clear he did not mind how tortuously and perfidiously he worked.
Sir Walter Ralegh | William Stebbing
British Dictionary definitions for perfidious
/ (pəˈfɪdɪəs) /
guilty, treacherous, or faithless; deceitful
Derived forms of perfidious
- perfidiously, adverb
- perfidiousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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