sibylline

adjective

sib·​yl·​line

variants or less commonly sybilline

ˈsibəˌlīn, 

-ˌlēn, 

-lə̇n

1

often capitalized

a

: of, relating to, resembling, or characteristic of a sibyl : prophetic

the novelist … growing a little sibylline in her success

—Lionel Trilling

b

: uttered or written in or as if in prophecy

a kind of Sibylline book in which ready and infallible answers will be found to problems

—Times Literary Supplement

2

a

: mysterious, cryptic, occult

thoroughly sibylline in most of his pronouncements

—John Gunther

b

: ambiguous, equivocal

utterances remained sibylline

—A. R. E. Pinchot

Word History

Etymology

Latin sibyllinus, from Sibylla sibyl + -inus -ine

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Rhymes for sibylline

• acridine
• alkaline
• andesine
• anodyne
• anticline
• arginine
• asinine
• atropine
• benzidine
• borderline
• byzantine
• calamine