Unbind (verb)

1. To release or free from being bound or tied.
2. To remove a binding or fastening.

Origin:

From un- + bind.

Examples:

1. He unbound the ropes that tied him to the chair.
2. She unbound her hair and let it fall loose.
3. The books were unbound and falling apart.
4. He unbound the bandage from his injured wrist.
5. She unbound the package and revealed the contents inside.