/ Dictionary / Index S Sisyphean: Meaning and Definition of Find definitions for: Sis•y•phe•an Pronunciation: (sis"u-fē'un), [key] — adj. of or pertaining to Sisyphus. endless and unavailing, as labor or a task. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sisyphean (Thesaurus) sistrum Sisyphus Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language