a person who rebels against any authority, established order, or ruling power
a person who believes in, advocates, or promotes anarchism or anarchy; especially : one who uses violent means to overthrow the established order.
a complete lack of order.
Although Anarchy is generally thought of as a complete lack of govt, and some individuals who think thats a great idea, have tried to claim the term Anarchists as a way to describe themselves, they are mistaken, someone who seeks to overthrow any form of govt through violence AND apon success of said endeavor wants no form of authority be put in its place is an Anarchist. The correct term for someone who just wants to live without rules is dreamer and although I love dreams myself, I recognize that there is just no way people can live in large groups without some sort of mechanism in place to bring about order. History has proven this time and time again.