/ Dictionary / Index R riotous: Meaning and Definition of Find definitions for: ri•ot•ous Pronunciation: (rī'u-tus), [key] — adj. (of an act) characterized by or of the nature of rioting or a disturbance of the peace. (of a person) inciting or taking part in a riot. given to or marked by unrestrained revelry; loose; wanton: riotous living. boisterous or uproarious: riotous laughter. hilariously funny. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: riotous (Thesaurus) riot gun riot squad Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language