oracular

Etymology

From Middle French oraculaire.

adj

1. Of or relating to an oracle.
   Ferguson's sin consisted in his oracular 'unmasking' of a 'second-rate sort of society, full of second rate citizens, pursuing comparatively worthless objects.' 2006, Lisa Hill, The Passionate Society: the social, political and moral thought of Adam Ferguson
2. Prophetic, foretelling the future.
   It was one of those dire oracular pronouncements that Marko made from time to time, which were afterwards spread from mouth to mouth among the Serbs. 1963, “Chapter 26”, in Joseph Hitrec, transl., Bosnian Chronicle, New York: Arcade, translation of original by Ivo Andrić, published 1993, page 402
3. Wise, authoritative.
4. Ambiguous, hard to interpret.
   Nothing offended me but that lisping Miss Haughton, whose every speech is inarticulately oracular. 1754, Horace Walpole, letter to John Chute
   This utterance was admirably oracular, being susceptible of cogent quotation by both sides[…] 1895, Andrew Dickson White, History of the Warfare of Science with Theology in Christendom