traitorous

from WordNet (r) 3.0 (2006)

traitorous
    adj 1: having the character of, or characteristic of, a traitor;
           "the faithless Benedict Arnold"; "a lying traitorous
           insurrectionist" [syn: {faithless}, {traitorous},
           {unfaithful}, {treasonable}, {treasonous}]

from The Collaborative International Dictionary of English v.0.48

Traitorous \Trai"tor*ous\, a. [Cf. F. tra[^i]treux.]
   1. Guilty of treason; treacherous; perfidious; faithless; as,
      a traitorous officer or subject. --Shak.
      [1913 Webster]

   2. Consisting in treason; partaking of treason; implying
      breach of allegiance; as, a traitorous scheme.
      [1913 Webster] -- {Trai"tor*ous*ly}, adv. --
      {Trai"tor*ous*ness}, n.
      [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

49 Moby Thesaurus words for "traitorous":
      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

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