Same word as in-determinate:
clear as dishwater, cryptic, doubtful, dubious, enigmatic, enigmatical, equivocal, inconclusive, indefinite, indeterminate, inexplicit, muddy, multivocal, obscure, opaque, polysemous, puzzling, questionable, tenebrous, uncertain, unclear, unintelligible, vague
clear as dishwater, cryptic, doubtful, dubious, enigmatic, enigmatical, equivocal, inconclusive, indefinite, indeterminate, inexplicit, muddy, multivocal, obscure, opaque, polysemous, puzzling, questionable, tenebrous, uncertain, unclear, unintelligible, vague