Related Clues:

• Undo an amendment
• Void a marriage
• Void, as a marriage certificate
• The 21st Amendment, e.g.
• Slack off
• Declare legally void
• Untie
• Give some slack
• Formally withdraw
• Uncinch
• Add slack
• Unlace, perhaps
• Make less tight
• Make disappear
• Annul an amendment