Very lively or successful; · very successful; Synonyms quotations synonyms: Definition of roaring adjective in oxford advanced learners dictionary. See examples of roaring used in a sentence. The show was a roaring success. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. See also thesaurus: How to use roaring in a sentence. The act of a person, animal, or thing that roars. A roaring trade. Prosperous the ice-cream sellers did a roaring trade in the … Roaring meaning, definition, what is roaring: Roaring synonyms, roaring pronunciation, roaring translation, english dictionary definition of roaring. [=a very great success] life during the roaring twenties [=the 1920s, when many people lived in a very wild and lively way] Roaring /ˈrɔːrɪŋ/ adj informal very brisk and profitable (esp in the phrase a roaring trade) adv noisily or … Loud and powerful: The meaning of roaring is making or characterized by a sound resembling a roar : Collins concise english dictionary © harpercollins publishers:: Thriving, prosperous, bustling; A roaring fire is very large, noisy, and bright. Brisk or highly successful, as trade he did a roaring business selling watches to tourists Making a deep, very loud, continuous noi. :