Untie (verb)

To loosen or unfasten the knot or ties that secure something.

Origin:

Derived from the old english word 'untian' which means to undo or unfasten.

Examples:

1. She untied the ribbon around the present.
2. The prisoner struggled to untie the ropes that bound his hands.
3. The sailor untied the knot that held the rope to the dock.
4. The boy untied his shoes before jumping into the pool.
5. The horse was untied from the post and set free to roam.