Synonyms for copious Found 5 synonyms across 2 meanings for “copious”. large in number or quantity (especially of discourse) (adj) voluminous affording an abundant supply (adj) ampleplenteousplentifulrich Explore Related Words Rhymes with copiousSynonyms for voluminousSynonyms for ampleSynonyms for plenteousSynonyms for plentifulSynonyms for rich Synonym Finder | Rhyme Finder | Poetry Editor