sibylline

sibylline \SIB-uh-leen\, adjective:

1。先知;玄妙。
2。预言;玄妙。
3。神秘，难以理解。

1. Prophetic; oracular.
2. Of, resembling, or characteristic of a sibyl; prophetic; oracular.
3. Mysterious; cryptic.

OPN, an American actually called Daniel Lopatin, has been around since 2006 and already amassed a ton of loop-based otherworldly music pieces released under an array of suitably sibylline monikers.
-- Thomas Corlin, "Interview: Oneohtrix Point Never", Spoonfed.co.uk

The response, by the bye, was of the true sibylline stamp,—nonsensical in its first aspect, yet on closer study unfolding a variety of interpretations, one of which has certainly accorded with the event.
-- Nathanial Hawthorne, The Blithedale Romance

Sibylline derives from the Greek Sibylla, any of several prophetesses consulted by ancient Greeks and Romans, of uncertain origin.