verb (used with object), secularized, secularizing.
to make secular
; separate from religious or spiritual connection or influences; make worldly or unspiritual; imbue with secularism
to change (clergy) from regular to secular
to transfer (property) from ecclesiastical to civil possession
Also, especially British, secularise.
oversecularize, verb (used with object), oversecularized, oversecularizing.