extinguishex·tin·guish /ɪkˈstɪŋgwɪʃ/ verb [transitiveT]1LAWto remove someone’s permission or right to do somethingAny settlement extinguishes the plaintiff’s title to that interest in the goods.
The contract would be valid only where such rights had not been extinguished by the government.
2FINANCELAWto agree that a debt does not have to be paidDeath does not automatically extinguish debts on bank accounts.