sibylline vs cryptic

sibylline and cryptic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sibylline	No	Yes	No	No
cryptic	No	Yes	No	No

As adjectives, sibylline and cryptic are synonyms defined as:

Other synonyms of sibylline include cabalistic, cryptical, kabbalistic, qabalistic.

sibylline (adjective)	cryptic (adjective)
having a secret or hidden meaning	having a puzzling terseness
resembling or characteristic of a prophet or prophecy	having a secret or hidden meaning
	of an obscure nature