sibylic

WordReference Random House Unabridged Dictionary of American English © 2026

sib•yl  (sib′əl), n. 

1. Mythology any of certain women of antiquity reputed to possess powers of prophecy or divination.
2. a female prophet or witch.

• Greek, as above
• Medieval Latin Sibilla
• Greek Síbylla Sibylla; replacing Middle English Sibil
• 1250–1300

Synonyms

seer, prophetess, oracle, soothsayer.

Sib•yl  (sib′əl), n. 

1. a female given name.

Also, Sib′ylle. 

Collins Concise English Dictionary © HarperCollins Publishers::

sibyl / ˈsɪbɪl/ noun

1. (in ancient Greece and Rome) any of a number of women believed to be oracles or prophetesses, one of the most famous being the sibyl of Cumae, who guided Aeneas through the underworld
2. a witch, fortune-teller, or sorceress

Etymology: 13th Century: ultimately from Greek Sibulla, of obscure origin

sibylline / ˈsɪbɪˌlaɪn sɪˈbɪlaɪn/sibyllic, sibylic / sɪˈbɪlɪk/ adjective