The Collaborative International Dictionary
Dechristianizing
Dechristianize \De*chris"tian*ize\, v. t. [imp. & p. p. Dechristianized; p. pr. & vb. n. Dechristianizing.] To turn from, or divest of, Christianity.
Wiktionary
dechristianizing
vb. (present participle of dechristianize English)