perfidy

noun

Deliberate breach of faith; calculated violation of trust; treachery.

noun

The act or an instance of treachery.

noun

Breach of faith or trust; base treachery; faithlessness.

noun

Synonyms See perfidious.

noun

The act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery.

noun

A state or act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery.

noun

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.

noun

A state or act of deceit.

noun

an act of deliberate betrayal

noun

betrayal of a trust