Synonyms for annul

Verb

1. invalidate, annul, quash, void, avoid, nullify, cancel, strike down

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

2. revoke, annul, lift, countermand, reverse, repeal, overturn, rescind, vacate, cancel, strike down

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