inscrutable

inscrutable
    adj 1: of an obscure nature; "the new insurance policy is
           written without cryptic or mysterious terms"; "a deep
           dark secret"; "the inscrutable workings of Providence";
           "in its mysterious past it encompasses all the dim
           origins of life"- Rachel Carson; "rituals totally
           mystifying to visitors from other lands" [syn: {cryptic},
           {cryptical}, {deep}, {inscrutable}, {mysterious},
           {mystifying}]
    

Inscrutable \In*scru"ta*ble\, a. [L. inscrutabilis : cf. F.
   inscrutable. See {In-} not, and {Scrutiny}.]
   Unsearchable; incapable of being searched into and understood
   by inquiry or study; impossible or difficult to be explained
   or accounted for satisfactorily; obscure; incomprehensible;
   as, an inscrutable design or event.
   [1913 Webster]

         'T is not in man
         To yield a reason for the will of Heaven
         Which is inscrutable.                    --Beau. & Fl.
   [1913 Webster]

         Waiving a question so inscrutable as this. --De
                                                  Quincey.
   [1913 Webster]
    

21 Moby Thesaurus words for "inscrutable":
      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