Douglas Harper's Etymology Dictionary
Cumaean
1731, from Latin Cumae (Greek Kyme), ancient city on the Italian coast near Naples, founded by Greeks 8c. B.C.E.; especially famous for the Sybil there, mentioned by Virgil.
Usage examples of "cumaean".
You speak like the Cumaean sibyls, or as if you were rendering oracles at your temple in Corinth.