Source : Webster's Revised Unabridged Dictionary (1913)

Unfix \Un*fix"\, v. t. [1st pref. un- + fix.]
   1. To loosen from a fastening; to detach from anything that
      holds; to unsettle; as, to unfix a bayonet; to unfix the
      mind or affections.

   2. To make fluid; to dissolve. [R.]

            The mountain stands; nor can the rising sun Unfix
            her frosts.                           --Dryden.