Definition of sibyl
1
: any of several prophetesses usually accepted as 10 in number and credited to widely separate parts of the ancient world (such as Babylonia, Egypt, Greece, and Italy)
2a
: prophetess
b
: fortune-teller
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Merriam-Webster unabridged
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Time Traveler for sibyl
The first known use of sibyl was in the 14th century
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