/ Dictionary / Index D duplicitous: Meaning and Definition of Find definitions for: du•plic•i•tous Pronunciation: (d-plis'i-tus, dy-), [key] — adj. marked or characterized by duplicity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: duplicitous (Thesaurus) duplicatus duplicity Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language