The Collaborative International Dictionary
Traitorous \Trai"tor*ous\, a. [Cf. F. tra[^i]treux.]
Guilty of treason; treacherous; perfidious; faithless; as, a traitorous officer or subject.
--Shak.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.
Wiktionary
adv. In a traitorous manner; treacherously.
WordNet
adv. in a disloyal and faithless manner; "he behaved treacherously"; "his wife played him false" [syn: faithlessly, treacherously, treasonably, false]
Usage examples of "traitorously".
The I understanding the cause of his miserable estate, sayd unto him, In faith thou art worthy to sustaine the most extreame misery and calamity, which hast defiled and maculated thyne owne body, forsaken thy wife traitorously, and dishonoured thy children, parents, and friends, for the love of a vile harlot and old strumpet.
Senator Hanway, to make the awful certainty threefold surer, was traitorously proposing his Georgian Bay-Ontario Canal.
The I understanding the cause of his miserable estate, sayd unto him, In faith thou art worthy to sustaine the most extreame misery and calamity, which hast defiled and maculated thyne owne body, forsaken thy wife traitorously, and dishonoured thy children, parents, and friends, for the love of a vile harlot and old strumpet.
Charles Darnay had yesterday pleaded not guilty to an indictment denouncing him (with infinite jingle and jangle) for that he was a false traitor to our serene, illustrious, excellent and so forth, prince, our Lord the King, by reason of his having, on divers occasions, and by divers means and ways, assisted Lewis, the French King, in his wars against our said serene, illustrious, excellent, and so forth, that was to say, by coming and going, between the dominions of our said serene, illustrious, excellent, and so forth, and those of the said French Lewis, and wickedly, falsely, traitorously, and otherwise evil-adverbiously, revealing to the said French Lewis what forces our said serene, illustrious, excellent, and so forth, had in preparation to .