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.
In my mind's eye, Shakespeare is a huge, hot sea-beast, with fire in his veins and ice on his claws and inscrutable eyes, who looks like an inchoate hump under the encrustations of live barnacle-commentaries, limpets and trailing weeds. A. S. Byatt
This world, after all our science and sciences, is still a miracle wonderful, inscrutable, magical and more, to whosoever will think of it. Thomas Carlyle
This world, after all our science and sciences, is still a miracle; wonderful, inscrutable, magical and more, to whosoever will think of it. Thomas Dekker
People like to say that East Asians in general, and Japanese in particular, are not very expressive: there's that term 'inscrutable.' But often, Europeans just don't get the Asian codes. Believe me, the message is being expressed OK. David Mitchell
America is not only big and rich, it is mysterious; and its capacity for the humorous or ironical concealment of its interests matches that of the legendary inscrutable Chinese. David Riesman