1. (verb) undo the ties of

• unlace
• untie

1. (verb) undo the ties of

• undo

2. (verb) remove from tension

• relax
• unbend

3. (verb) remove a brace or braces from

• weaken

1. (verb) undo the ties of

• unlash
• unloose
• unloosen

1. (verb) undo the ties of

• bind
• tie

1. (verb) undo the ties of

• opener
• undoer
• unfastener
• untier