enemy
/ˈenəmɪ/noun
(pl. -ies)
1- a person who is actively opposed or hostile to someone or something敌人, 仇敌; 反对者。
1.1
the enemy
treated as sing. or pl. a hostile nation or its armed forces, especially in time of war敌国; 敌军：the enemy shot down four helicopters
敌军击落了4架直升机
as modifier enemy aircraft.敌机。
1.2
- a thing that harms or weakens something else大敌, 危害物：
routine is the enemy of art.
墨守成规是艺术的大敌。
短语
be one's own worst enemy
- act in a way contrary to one's own interests自己害自己。
词源
Middle English: from Old French enemi, from Latin inimicus, from in- 'not' + amicus 'friend'.