1. (a.) Guilty of treason; treacherous; perfidious; faithless; as, a traitorous officer or subject.

2. (a.) Consisting in treason; partaking of treason; implying breach of allegiance; as, a traitorous scheme.

Judas-like Trojan-horse alienated apostate betraying breakaway collaborative deceitful degenerate disaffected disloyal double-crossing double-dealing estranged extreme extremistic factious faithless FALSE fifth-column insurgent insurrectionary insurrectionist mutineering mutinous perfidious quisling quislingistic rebel rebellious recreant renegade revolutional revolutionary riotous seditionary seditious subversive tergiversant tergiversating treacherous treasonable treasonous turbulent turncoat two-timing unfaithful unloyal untrue