dereligionize

from The Collaborative International Dictionary of English v.0.48

Dereligionize \De`re*li"gion*ize\, v. t.
   To make irreligious; to turn from religion. [R.]
   [1913 Webster]

         He would dereligionize men beyond all others. --De
                                                  Quincey.
   [1913 Webster]