annul: Meaning and Definition of
Pronunciation: (u-nul'), [key]
— -nulled, -nul•ling.
- (esp. of laws or other established rules, usages, etc.) to make void or null; abolish; cancel; invalidate: to annul a marriage.
- to reduce to nothing; obliterate.
- to cancel (a regularly scheduled train, plane, social event, etc.) for one day or one time only.
- annul (Thesaurus)