/ Dictionary / Index T traitor: Meaning and Definition of Find definitions for: trai•tor Pronunciation: (trā'tur), [key] — n. a person who betrays another, a cause, or any trust. a person who commits treason by betraying his or her country. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: traitor (Thesaurus) trait traitorous 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