n. 敌手,对手
拆分: ad-朝,向 + -vers-转 + -ary名词词尾,人 ⇒ 转向反面
例:He saw her as his main adversary within the company. 他将她视为公司中主要的对手。 Great Britain and Germany were adversaryies in the Second World War. 英国与德国在第二次世界大战中曾互为敌国。