adversary
意味
- 敵(enemy);対抗者
例文
An adversary yesterday is a friend today.
昨日の敵は今日の友。
語源
英語の原文（Wiktionary）
From Middle English adversarie, from Anglo-Norman aversaire (in Wace's Life of Saint Margaret) and Old French aversier, aversaire (French adversaire), from Latin adversārius, from adversus (“turned toward”). By surface analysis, adverse + -ary.