extortionist

1. 敲诈者;勒索者
   An extortionist is a person who commits the crime of obtaining something from someone by using force or threats.

1. Police use of extortionist methods has been criticized.
   警察强行逼供的方法受到了批评。

noun

1. a criminal who extorts money from someone by threatening to expose embarrassing information about them

   Synonym:    blackmailerextortioner