Ennius, Quintus Syllabification: (En·ni·us, Quintus)Pronunciation: /ˈenēəs/Definition of Ennius, Quintus (239–169 bc), Roman epic poet and playwright. He was largely responsible for the creation of a native Roman literature based on Greek models. Ennius, Quintus in other Oxford dictionaries Definition of Ennius, Quintus in the British & World English dictionary