UNSCREW

/ ˌʌnˈskruː; NAmE / verb [ vn ]

1.

to undo sth by twisting or turning it; to become undone in this way :

[ vn ]

I can't unscrew the lid of this jar.

[also v ]

2.

to take the screws out of sth :

You'll have to unscrew the handles to paint the door.