Because of Lauren's perfidy in revealing Anna's secret, Jessica realized that she could not trust her.
An example of a perfidy is spreading a best friend's secrets all over town.
Origin of perfidyFrench perfidie from Classical Latin perfidia from perfidus, faithless from per fidem (decipi), (to deceive) through faith from per (see per) + fides, faith
- Deliberate breach of faith; calculated violation of trust; treachery: “the fink, whose perfidy was equaled only by his gall” ( Gilbert Millstein )
- The act or an instance of treachery.
Origin of perfidyLatin perfidia from perfidus treacherous per- to destruction ; see per- . fidēs faith ; see bheidh- in Indo-European roots.
- A state or act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery.
- (law) Specifically, in warfare, an illegitimate act of deception, such as using symbols like the Red Cross or white flag to gain proximity to an enemy for purposes of attack.
- A state or act of deceit.