sibyl
Concise Oxford English Dictionary © 2008 Oxford University Press:
sibyl/ˈsɪbl/
▶noun (in ancient times) a woman supposedly able to utter the prophecies of a god.
■ literary a woman able to foretell the future.
– derivatives
sibylline adjective.
sibylline adjective.
– origin from OFr. Sibile or med. L. Sibilla, via L. from Gk Sibulla.
'sibyl' also found in these Oxford entries:

