Related Clues:

• Renders knotless
• Undoes, a knot perhaps
• Solves a knot
• Removes restraint of classical drama rules — first one going
• Frees from constraints
• Loosens, as a 35 Down
• Ensures there are no strings attached?
• Loosens, as a bow
• Loosens, like shoelaces
• Frees from a knot
• Releases United fixtures after noon