extortionist

This term carries a heavy legal and criminal connotation, specifically identifying someone who leverages power or fear to illicitly gain assets. It is more precise than "blackmailer," as extortion can involve the abuse of official authority or physical threats, whereas blackmail typically relies on the threat of revealing compromising information.

In legal and journalistic registers, the word is used to categorize the perpetrator of a specific crime. It is almost always used with a negative moral judgment, describing a predatory relationship where the victim is coerced into compliance.