annul   (Sound)

The verb annul has 2 senses

• invalidate, annul, quash, void, avoid, nullify -- (declare invalid; "The contract was annulled"; "void a plea")


• revoke, annul, lift, countermand, reverse, repeal, overturn, rescind, vacate -- (cancel officially; "He revoked the ban on smoking"; "lift an embargo"; "vacate a death sentence")