Break up, as a knot (5)
I believe the answer is:
untie
(Other definitions for untie that I've seen before include "Loose bonds" , "Separate" , "Remove fastenings from" , "Free from restraining bonds or ropes" , "Detach" .)
I believe the answer is:
untie
(Other definitions for untie that I've seen before include "Loose bonds" , "Separate" , "Remove fastenings from" , "Free from restraining bonds or ropes" , "Detach" .)