To make void or of no effect; to nullify; to abolish; to do away with; -- used appropriately of laws, decrees, edicts, decisions of courts, or other established rules, permanent usages, and the like, which are made void by component authority.

declare invalid; "The contract was annulled"; "void a plea"

me nt: A legal decree that makes a marriage null and void.

annul by recalling or rescinding; "He revoked the ban on smoking"; "lift an embargo"; "vacate a death sentence"

To reduce to nothing; to obliterate.