Sibyllic

adjective
1.
of, resembling, or characteristic of a sibyl; prophetic; oracular.
2.
mysterious; cryptic.

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Sibylline
adjective 1. of, resembling, or characteristic of a sibyl; prophetic; oracular. 2. mysterious; cryptic.
Sibylline books
plural noun 1. (in ancient Rome) a collection of prophetic sayings, supposedly bought from the Cumaean sibyl, bearing upon Roman policy and religion
Sic
adverb, Latin. 1. so; thus: usually written parenthetically to denote that a word, phrase, passage, etc., that may appear strange or incorrect has been written intentionally or has been quoted verbatim: He signed his name as e. e. cummings (sic). verb (used with object), sicked or sicced [sikt] /sɪkt/ (Show IPA), sicking or siccing. 1. […]