searchless

adjective3

1. •
   Impossible to be searched; inscrutable; impenetrable.

   • Famine, murder, hell and power Were glutted in that glorious hour Which searchless fate had stamped for me With the seal of her security — 1813
2. •
   Vast; Too massive or great to be fully known.

   • O Goodness searchless! Thou who once didst walk With man on earth, with man familiar talk,! — 1849
3. •
   That arrives at a solution by analytic means, rather than by trial and error or iterative searching.

   • The control is sought in the class of searchless self-adjustable systems that provide the linearity of the basic adjusting contour if the object state deviates from the unperturbed movement. — 2012