放弃的英语单词是abandon，也可以是quit。
abandon [ə'bændən]
vt.
放弃；弃绝；绝望；断念：
He abandoned all hope.
他放弃一切希望。
to abandon a research project
放弃一个研究项目
That patient abandoned the attempt in despair.
那病人绝望了。
(因形势紧迫、危险等)离弃(家园、飞机、船只等)；【航空学】(机上人员)弃机(跳伞)：
The sailors abandoned the burning ship.
海员们离弃燃烧着的船只。
to abandon a sinking ship
离弃正在沉没的船只
to abandon one's farm
离弃农场
丢弃(信仰等)；(不顾信义、义务、责任等而)遗弃，抛弃(妻儿等)：
The man shamelessly abandoned his wife and child for another woman.
那个男人无耻地抛弃了妻儿，另觅新欢。
to abandon a child
遗弃孩子
使屈服：
to abandon someone to the mercy of
听任某人受…的摆布
to abandon a city to an enemy army
弃城任敌军占领
[abandon oneself] 放纵;纵情;无拘无束;使沉溺于：
After his mother died, he abandoned himself to grief.
他母亲死后，他悲伤不已。
【保险业】委付
[废语]开除，逐出
n.
放纵；纵情；无拘无束，放任
狂热，狂放，狂放不羁
quit [kwit]
vt.
解除；消除：
She quit herself of all worries and devoted herself to the study of science.
她摆脱了一切烦恼，潜心研究科学。
偿还(债务等)；报答：
He quitted all scores with his friend.
他与朋友结清了一切债务。
离职；辞职：
He is going to quit his job next month because his salary is too low.
他由于薪金太低拟于下月辞职。
停止(工作等)；放弃：
The workers quit work at noon.
工人在中午时停止工作。
He has quit smoking for more than ten years.
他戒烟已经十多年了。
离开：
They have to quit China in a few days.
他们必须在几天之内离开中国。
[quit oneself][古语]表现:
He quit himself like an old man.
他表现得像个老人一样。
vi.
停止；罢手；认输；放弃：
They had to quit when they became aware of the fact that they could not win the game.
他们在觉察到不可能打赢这场比赛时，只好认输。
辞职；离开：
He didn't quit though his salary was a little lower than that of others.
虽然他的薪金比别人稍低，他也不辞职。
adj.
摆脱…的(常与 of 连用)
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