勒索的英文：
blackmail
chantage
exaction
extort
extortion
lug
pinch from
ransom
shake down
wring

参考例句：

Characterized by extortion.
敲诈的，勒索的

Practice blackmail
进行勒索

Put the lug on a jeweler
向珠宝商勒索

Excessive or unjust demand; extortion.
强索过分的或不公正的要求;勒索

Bribes paid to officials by racketeers for immunity from prosecution.
保护费诈骗勒索者为免于被起诉而向官员提供的贿赂

The blackmailer tried to extort a large sum of money from him.
勒索者企图向他勒索一大笔钱。

wring money from sb.
勒索某人的钱财

An extortionist or a blackmailer.
勒索者，敲诈者

To levy blackmail upon for extortion
打单勒索

They broke him by blackmail.
他们以勒索使他屈服。

blackmail是什么意思：
n. 勒索；勒索所得之款
v. 勒索

Vulnerable to abuse,blackmail,criticism
易受凌辱、敲诈、批评

It is a novel that mixes blackmail, extortion and mindless violence.
这是一部集合了敲诈、勒索和盲目暴力的小说。

`Increase productivity or lose your jobs.' `That's blackmail!'
｀你们要提高生产率,不然就把你们解雇!＇｀这是要挟!＇

chantage是什么意思：
n. 勒索;讹诈;恐吓
exaction是什么意思：
n. 勒索,苛求

The authority has no exacting responsibility.
（授予的）职权没有明确责任。

What's the exact count?
确切的总数是多少？

The task proved to be exacting.
这项任务结果是很艰巨的。