Словарь синонимов английского языка - traitorous

(adj) treacherous, perfidious, seditious, subversive, insurrectionist, renegade, insurgent, disloyal, deceitful, untrue, unfaithful, faithless; treasonable, Colloq double-crossing, double-dealing, two-timing: They identified the traitorous wretch and hanged him. Consorting with the enemy is a traitorous act.