- annul (v.)
[annul 词源字典]
- late 14c., from Old French anuller (13c.) or directly from Late Latin annullare "to make to nothing," from Latin ad- "to" (see ad-) + nullum, neuter of nullus "nothing" (see null). Related: Annulled; annulling.[annul etymology, annul origin, 英语词源]