The meaning of PERFIDY is the quality or state of being faithless or disloyal : treachery. How to use perfidy in a sentence.

In the context of war, perfidy is a form of deceptive tactic where one side pretends to act in good faith, such as signaling a truce (e.g., raising a white flag), but does so with the deliberate …

PERFIDY definition: 1. behaviour that is not loyal 2. behavior that is not loyal. Learn more.

PERFIDY meaning: 1. behaviour that is not loyal 2. behavior that is not loyal. Learn more.

1. Deliberate breach of faith; calculated violation of trust; treachery: "the fink, whose perfidy was equaled only by his gall" (Gilbert Millstein).

The noun perfidy means "deceitfulness" or "treachery," so it's not just being mean, but deliberately betraying a trust. The Latin root of perfidy is made up of per, or "through," and fidem, or "faith."

unfair treatment of somebody who trusts you synonym treachery. In Act 2 he learns of Giovanni’s perfidy and swears revenge. Definition of perfidy noun in Oxford Advanced Learner's …

Perfidy is the action of betraying someone or behaving very badly toward someone.

deliberate breach of faith or trust; faithlessness; treachery: perfidy that goes unpunished. an act or instance of faithlessness or treachery. ˈperfidy / ˈpɜːfɪdɪ /

There are two meanings listed in OED's entry for the noun perfidy. See ‘Meaning & use’ for definitions, usage, and quotation evidence.