/ Dictionary / Index D downriver: Meaning and Definition of Find definitions for: down•riv•er Pronunciation: (doun'riv'ur), [key] — adv., adj. with or in the direction of the current of a river: logs floating downriver. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: downriver (Thesaurus) downright Downs, The Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language