extinguish
verb [ T ]
uk/ɪkˈstɪŋɡwɪʃ/ us LAW
to take something away, for example a right to do something:
A deed restriction extinguishes the right to use or develop a property for certain things.
FINANCE
to decide that a debt does not have to be paid:
With interest the debt doubled and was not finally extinguished until years later.