atheous

adjective2

1. •
   (no longer used) Atheistic.

   • It is an ignorant conceit, that enquiry into nature should make men atheous: no man is so apt to see the star of Christ, as a diligent disciple of philosophy. — 1612
2. •
   (no longer used) Without God, neither accepting nor denying him.

   • I should say science was atheous, and therefore could not be atheistic. — 1880