/ Dictionary / Index T tactless: Meaning and Definition of Find definitions for: tact•less Pronunciation: (takt'lis), [key] — adj. lacking tact; showing no tact; undiplomatic; offendingly blunt: a tactless remark. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tactless (Thesaurus) taction tactual Related Content Daily Word Quiz: dentifrice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language