1.
[syn: faithless, traitorous, unfaithful, treasonable, treasonous]
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]
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]
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