/'enəmɪ; `ɛnəmɪ/
n
1 [C] person who strongly dislikes or wants to injure or attack sb/sth 敌人; 仇人; 仇敌
*Jane and Sarah used to be friends but now they are bitter enemies, ie of each other. 简和萨拉以前是朋友而现在是死对头.
* His arrogance made him many enemies, ie made many people hate him. 他妄自尊大, 树敌很多.
2 (a) the enemy [Gp] (armed) forces of a nation, side, etc with which one's country, side, etc is at war 敌军
*an encounter with the enemy 与敌军的遭遇战
* The enemy was/were forced to retreat. 敌军被迫撤退了.
* [attrib 作定语] enemy forces, aircraft, ships, etc 敌军、敌机、敌舰等
* enemy propaganda 敌方的宣传.
(b) [C] member of such a hostile force 敌兵.
3 [C] anything that harms or weakens 危害或削弱之物
*Poverty and ignorance are the enemies of progress. 贫穷和愚昧是进步的敌人.
4 (idm 习语) one's own worst enemy => worst. carry the war into the enemy's camp => carry.

npluralenemies[C]
[Date: 1200-1300; Language: Old French;Origin: enemi, from Latin inimicus, from amicus 'friend']
someone who hates you and wants to harm you
　She's a dangerous enemy to have.
　Cats and dogs have always been natural enemies .
　an old enemy of her father
make an enemy (of sb)
　a ruthless businessman who made a lot of enemies
　the unforgettable sight of the president shaking hands with his sworn enemy (=an enemy you will always hate)
sb's worst enemy
(=the person they hate most)
　I wouldn't wish this on my worst enemy .
someone who opposes or competes against you
　political enemies
　He was imprisoned for being 'an enemy of the revolution'.
alsothe enemy
the country against which your country is fighting in a war
　He was accused of collaboration with the enemy.
enemy forces/aircraft/territory etc
　a town behind enemy lines
something that people think is harmful or damaging
　The usual enemies, cigarettes and alcohol, are targeted for tax rises.
　The common enemy that united them was communism.
be your own worst enemy
to behave in a way that causes problems for yourself
public enemy number oneinformal
someone famous who has done something bad and who a lot of people do not like
　His views made him public enemy number one in the eyes of the media.
the enemy within
people in a society etc that other people think are trying to secretly destroy or damage it
　efforts to label environmentalists as the enemy within
if one thing is the enemy of another, the second thing cannot exist because the first thing destroys it
　Boredom is the enemy of learning.