Sisyphus Syllabification: (Sis·y·phus)Pronunciation: /ˈsisəfəs/ Greek MythologyDefinition of Sisyphus the son of Aeolus, punished in Hades for his misdeeds in life by being condemned to the eternal task of rolling a large stone to the top of a hill, from which it always rolled down again. Sisyphus in other Oxford dictionaries Definition of Sisyphus in the British & World English dictionary