sibyl

/ˈsɪbəl/
noun
  1. A woman in ancient times who was believed to be able to tell the future or give advice from the gods; a prophetess.
    • People traveled for days to hear the sibyl's prophecies in her cave.
    • The ancient sibyl spoke cryptic verses about the fate of the city.
    • In Roman mythology, the Cumaean sibyl guided Aeneas through the underworld.
  2. A woman who predicts the future or gives wise advice; a fortune-teller or wise counselor.
    • My grandmother was like a sibyl, always knowing what would happen next.
    • The old woman was regarded as a sibyl by the villagers, who came to her for guidance.
    • In the novel, the mysterious sibyl warns the hero of a coming betrayal.