Related Clues:

• Untie
• Dismantle
• Hit 'back'
• Go back a step, in word processing
• Put back the way things were
• Reverse an action
• Reverse, as an action
• Word-processor command
• Free of knots
• Make disappear
• Change back
• Release the buttons of
• Cancel, on a PC
• Open, as a knot
• Remove, as wrapping