Synonyms for Oracular (same or very similar meaning)
WordNet sense 1 (obscurely prophetic):
DelphicWordNet sense 2 (foretelling events as if by supernatural intervention):
propheticalWordNet sense 3 (resembling an oracle in obscurity of thought):
enigmaticWordNet sense 4 (having more than one possible meaning):
ambiguousFrom the ODE community, based on WordNetadd/edit