/ Dictionary / Index T traitorous: Meaning and Definition of Find definitions for: trai•tor•ous Pronunciation: (trā'tur-us), [key] — adj. having the character of a traitor; treacherous; perfidious. characteristic of a traitor. of the nature of treason; treasonable: a traitorous act. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: traitorous (Thesaurus) traitor traitress Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language