/ Dictionary / Index R roaring: Meaning and Definition of Find definitions for: roar•ing Pronunciation: (rôr'ing, rōr'-), [key] — n. the act of a person, animal, or thing that roars. a loud, deep cry or sound or a series of such sounds. a disease of horses, caused by respiratory obstruction or vocal cord paralysis, and characterized by loud or rough breathing sounds. —adj. making or causing a roar, as an animal or thunder. brisk or highly successful, as trade: He did a roaring business selling watches to tourists. characterized by noisy, disorderly behavior; boisterous; riotous: roaring revelry. complete; utter; out-and-out: a roaring idiot; a roaring success. —adv. very; extremely: roaring drunk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: roaring (Thesaurus) roar roaring forties Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language