unfasten (Meaning)

Wordnet

unfasten (v)

cause to become undone

become undone or untied

Webster

To loose; to unfix; to unbind; to untie.

The mechanic carefully unfastened the bolts holding the car engine in place.
The sailor unfastened the sails to prepare for departure.
The hiker unfastened his backpack to take a break.
The tailor unfastened the hemline of the dress to adjust the length.
The child unfastened the buttons on his coat to get ready for bed.
The electrician unfastened the wires to repair the circuit.
The artist unfastened the canvas from its frame to repaint it.
The carpenter unfastened the doorknob to replace it with a new one.
The firefighter unfastened the safety belts to rescue the victims from the burning building.
The mountain climber unfastened the rope from the anchor to continue his ascent.

cause to become undone, become undone or untiedTo loose; to unfix; to unbind; to untie.

undo,untie, unbind, loosen,unlace, unravel, unlash, unbraid,disentangle, loose

fasten, lash, bind, tie, tie, knot, fasten, lash, knot, bind

The mechanic carefully unfastened the bolts holding the car engine in place.

The sailor unfastened the sails to prepare for departure.

The hiker unfastened his backpack to take a break.

The tailor unfastened the hemline of the dress to adjust the length.