commentator Syllabification: (com·men·ta·tor)Pronunciation: /ˈkämənˌtātər/Translate commentator | into French | into German | into Italian | into Spanish Definition of commentator noun a person who comments on events or on a text. a person who delivers a live commentary on an event or performance. The ending of commentator is spelled -or.commentator in other Oxford dictionaries Definition of commentator in the British & World English dictionary