Jubilate Syllabification: (Ju·bi·la·te)Pronunciation: /ˌjo͞obəˈlātē, ˌyo͞obəˈlätā/Definition of Jubilate noun [in singular] Psalm 100 (99 in the Vulgate), beginning Jubilate deo “rejoice in God,” especially as used as a canticle in the Anglican service of matins. a musical setting of this. Origin:Latin, 'shout for joy!', imperative of jubilare (see jubilate)Jubilate in other Oxford dictionaries Definition of Jubilate in the British & World English dictionary