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1.
The antagonist of Victor Hugo's novel "Les Miserables". He is an obsessive, merciless police inspector who doggedly chases the novel's protagonist for many years. Javert committs suicide by throwing himself into a river when he cannot reconcile his strict belief in the law with his new found sense of mercy.

As a noun, Javert refers to a person of similar characteristics: ruthless, obsessive, perfectionist. It may also refer to a television trope (or cliche), describing a character that fills a similar role of the actual Javert from Hugo's novel.

Javert may also be used as a verb, referring to the act of relentlessly chasing someone or something.
"I won't stop. Do you understand? I won't let you go." - Inspector Javert
by Islington December 10, 2006
 
2.
Inspector Javert is the nemesis of the criminal sissy Jean Valjean in Les Miserables by Victor Hugo. He is suave, sophisticated, handsome and aboove all ruthless. He was born inside a jail (or a Gaol) and accidentally (and unfortunately) fell off a bridge to his death. To show what a real man Javert was it is important to look at his work. He was a undercover agent, infiltrating the sweaty student rebellion in gay paris. He was an awesome police officer, never giving up the chase. Indeed, Javert was, to anyone, a role model.

Javert is also a verb, derived from the same meaning. To javert someone is to never stop chasing them up for something.
"I'm Javert, do not forget me, do not forget my name, 24601"

"Oh geezer, my german teacher is really javerting me for my homework, maybe i should Jean Valjean it"
by Jeffrey Douglas August 13, 2006