D defs.my
Entry 2 senses Webster, 1913

Traitorous

/trāt′ərəs/ · Trai·tor·ous · IPA /ˈtɹeɪtəɹəs/
01 a. Guilty of treason; treacherous; perfidious; faithless; as, a traitorous officer or subject.
  1. 1.
    Guilty of treason; treacherous; perfidious; faithless; as, a traitorous officer or subject.
  2. 2.
    Consisting in treason; partaking of treason; implying breach of allegiance; as, a traitorous scheme.