Trai"tor*ous (?), a. [Cf. F. traitreux.]
1.
Guilty of treason; treacherous; perfidious; faithless; as, a traitorous officer or subject.
Shak.
2.
Consisting in treason; partaking of treason; implying breach of allegiance; as, a traitorous scheme.
-- Trai"tor*ous*ly, adv. -- Trai"tor*ous*ness, n.
© Webster 1913.