The Oxford Thesaurus An A-Z Dictionary of Synonyms - ambiguous adj.

1) equivocal, amphibological, amphibolic or amphibolous; misleading: If one says 'Taylor saw Tyler drunk', which one was drunk is ambiguous. 2) doubtful, dubious, questionable, obscure, indistinct, unclear, indefinite, indeterminate, uncertain, undefined, inconclusive, uncertain, vague, misty, foggy, unclear; cryptic, Delphic, enigmatic(al) , oracular, mysterious, puzzling; confusable: The soothsayer's prophecies were sufficiently ambiguous to allow for several conflicting interpretations. 3) unreliable, undependable: How can the doctor decide on a correct diagnosis when the symptoms are ambiguous?