1. (noun) loosening the ties that fasten something

• unfastening
• untying

1. (noun) an act that makes a previous act of no effect (as if not done)

• about-face
• policy change
• reversal
• volte-face

2. (noun) loosening the ties that fasten something

• laxation
• loosening

1. (noun) an act that makes a previous act of no effect (as if not done)

• undo

2. (noun) loosening the ties that fasten something

• loosen
• loosen
• undo
• undo
• untie
• untie
• unfasten
• unfasten