Related Clues:

• Make void
• Remove the tether
• Loosen, as a shoe
• Computer's reversal command
• Remove an ascot, e.g.
• Choice on an Edit menu
• Let loose, in a way
• Counter
• Repair damage
• Invalidate
• Go back to square one
• Bring to naught
• Annul
• Set right, maybe
• Rescind