The Collaborative International Dictionary of English v.0.48:

Bonify \Bon"i*fy\, v. t. [L. bonus good + -fy: cf. F. bonifier.]
   To convert into, or make, good.
   [1913 Webster]

         To bonify evils, or tincture them with good.
                                                  --Cudworth.
   [1913 Webster]