The Oxford Thesaurus An A-Z Dictionary of Synonyms - oraclen.

1) prophet, sibyl, seer, soothsayer, augur, fortune-teller, diviner, prognosticator, US reader (and adviser or advisor) , Cassandra, Nostradamus; authority, guru, mastermind, mentor, wizard: He insists on consulting his oracle before making any final decision. 2) prophecy, augury, prediction, divination, advice, prognostication, answer, message, divine utterance: According to the oracle, the travellers would survive the perils of the journey.