Fo, Dario Syllabification: (Fo, Dario)Pronunciation: /fō/Definition of Fo, Dario (1926-), Italian playwright. Notable works: Accidental Death of an Anarchist (1970) and Open Couple (1983). Nobel Prize for Literature (1997). Fo, Dario in other Oxford dictionaries Definition of Fo, Dario in the British & World English dictionary