annul

v. 宣告无效，取消

annex, annexation, annexe (also esp US annex), annihilate, annihilation, anniversary, annotate, annotated, annotation, announce, announcement, announcer, annoy, annoyance, annoyed, annoying, annual, annually, annuitant, annuity, annular, annular eclipse, annulment, annunciation, anode, anodize, anodyne, anoint, anomalous, anomalously, anomaly, anon, anonymity, anonymous, anonymously, anopheles, anorak, anorexia, anorexic, another,