transitive. To unfix; to deprive of firmness or fixity; to make loose or slack. Also absol.

transitive. To open, unfasten, or loosen by undoing the lace or laces of; esp. to unfasten or loosen (a piece of clothing, footwear, armour…

To weaken the adhesion or attachment of; = loosen, v. 3; to make unstable or insecure in position. Also intransitive for passive. Now only archaic.

transitive. To loosen; to break. Obsolete.

transitive. To undo from a fixed position; to unfix, unfasten, loosen.

transitive. To undo from a fixed state or position; to unfasten, loosen.

(un-, prefix2 affix 1a.)

transitive. To loosen, dislodge.

To weaken the adhesion or attachment of; to unfix, detach.