The Collaborative International Dictionary of English v.0.48:

Unconsecrate \Unconsecrate\
   See consecrate.

The Collaborative International Dictionary of English v.0.48:

Unconsecrate \Un*con"se*crate\ ([u^]n*k[o^]n"s[-e]*kr[=a]t), v.
   t. [1st pref. un- + consecrate.]
   To render not sacred; to deprive of sanctity; to desecrate.
   [Obs.] --South.
   [1913 Webster]