supertitle Syllabification: (su·per·ti·tle)Pronunciation: /ˈso͞opərˌtītl/Definition of supertitle noun (usually supertitles) a caption projected on a screen above the stage in an opera, translating the text being sung. verb [with object] provide (an opera) with supertitles. supertitle in other Oxford dictionaries Definition of supertitle in the British & World English dictionary