perfidy - Wiktionary, the free dictionary Noun perfidy (countable and uncountable, plural perfidies) A state or act of violating faith or allegiance; violation of a promise or vow, or of trust Synonyms: betrayal, treachery, perfidiousness; see also Thesaurus: betrayal
Perfidy - Wikipedia 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 intention of breaking that promise
Perfidy - Definition, Meaning Synonyms | Vocabulary. com If you shared your most embarrassing secrets with a friend who then told them to everyone he knows, his betrayal could be described as perfidy The noun perfidy means "deceitfulness" or "treachery," so it's not just being mean, but deliberately betraying a trust