(a.) Unsearchable; incapable of being fathomed or understood\ by inquiry or study; impossible or difficult to be explained or accounted for satisfactorily; obscure; incomprehensible; as, an inscrutable design or event.

Greek to one ambiguous arcane beyond understanding cabalistic impenetrable inarticulate incognizable incoherent incomprehensible mystic numinous past comprehension rambling unaccountable unconnected unfathomable unguessed unintelligible unknowable unsearchable