Watteau, Jean Antoine Syllabification: (Wat·teau, Jean Antoine)Pronunciation: /wäˈtō/Definition of Watteau, Jean Antoine (1684–1721), French painter. An initiator of the rococo style, he is also known for his invention of the fête galante. Watteau, Jean Antoine in other Oxford dictionaries Definition of Watteau, Jean Antoine in the British & World English dictionary