English → Latin
“perfidy” in Latin
perfidiafaithlessness, dishonesty, treachery, falsehood, perfidyīnfidēlitāsunfaithfulness, faithlessness, infidelity
The English word perfidy itself goes back to Latin per, through perfidia.
Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864
perfidy
perfidia (faithlessness): infidelitas (the conduct or properties of a faithless person): perjura fides († Hor.).
Quick answer
- What is the Latin word for perfidy?
- The usual Latin words for “perfidy” are perfidia, īnfidēlitās. The right choice depends on the sense; see the distinctions below.
Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.