/ Dictionary / Index S sibyl: Meaning and Definition of Find definitions for: sib•yl Pronunciation: (sib'ul), [key] — n. any of certain women of antiquity reputed to possess powers of prophecy or divination. a female prophet or witch. Sib•yl Pronunciation: (sib'ul), [key] — n. a female given name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sibyl (Thesaurus) sibship Sibylla 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