Cancel (an order, action, effect etc) (4)
I believe the answer is:
undo
(Other definitions for undo that I've seen before include "Ruin or loosen ties" , "Ruin prospects of; cancel" , "Release fastening" , "Overturn" , "Loosen or reverse" .)
I believe the answer is:
undo
(Other definitions for undo that I've seen before include "Ruin or loosen ties" , "Ruin prospects of; cancel" , "Release fastening" , "Overturn" , "Loosen or reverse" .)