<p><strong>Verb</strong></p><ul><li>(used with object) (especially of laws or other established rules, usages, etc.) to make void or null; abolish; cancel; invalidate: to annul a marriage</li><li>Synonyms: repeal, rescind, nullify</li><li>to reduce to nothing; obliterate</li><li>to cancel (a regularly scheduled train, plane, social event, etc.) for one day or one time only</li></ul>