The crime of violating majesty, an offense against the dignity of a reigning sovereign or against a state.
A state or act of deceit.
A state or act of violating faith or allegiance; violation of a promise or vow, or of trust
Specifically, in warfare, an illegitimate act of deception, such as using symbols like the Red Cross or white flag in a false claim of surrender to gain proximity to an enemy for purposes of attack.