The Collaborative International Dictionary
Unconsecrate
Unconsecrate \Un*con"se*crate\, v. t. [1st pref. un- +
consecrate.]
To render not sacred; to deprive of sanctity; to desecrate.
[Obs.]
--South.
Wiktionary
unconsecrate
vb. (context obsolete transitive English) To render not sacred; to deprive of sanctity.