What is Abrogate?

Legal Definition
To formally annul or repeal a law through an act of the legislature, constitutional authority, or custom. In contract and insurance law, it is to rescind or terminate a contract. In constitutional law, the abrogation doctrine refers to the power of Congress to revoke a state's sovereign immunity and authorize suits against that state.
Legal Definition
1. To nullify an contract by means of mutual agreement. 2. To officially abolish a law.