Un*search"a*ble*ness

from The Collaborative International Dictionary of English v.0.48

Unsearchable \Un*search"a*ble\, a.
   Not searchable; inscrutable; hidden; mysterious.
   [1913 Webster]

         The counsels of God are to us unsearchable. --Rogers.
   [1913 Webster] -- {Un*search"a*ble*ness}, n. --
   {Un*search"a*bly}, adv.
   [1913 Webster]