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.

Source: Webster's Revised Unabridged Dictionary (1913)