in·ven·tive / inˈventiv/ • adj. (of a person) having the ability to create or design new things or to think originally: she is the most inventive painter around. ∎ (of a product, process, action, etc.) showing creativity or original thought: methods of communication during the war were diverse and inventive. DERIVATIVES: in·ven·tive·ly adv. in·ven·tive·ness n.