A person who is either experienced or new in the ways of hacking, cheating, or doing things his own way (Oftenly, this way the H4xx0r uses is considered morally wrong or low).
The term "h4xx0r" can be used in both a positive and negative way. Typically, calling someone a h4xx0r is in the negative sort. But some h4xx0rs take pride in being what they are, just like nerds
H4xx0r, is basically a computer-experienced person's/gamer
's way of calling someone a hacker
If h4xx0r is spelt with one or two big X's, that is the final form of the word and the highest degree.
h4xx0r, h4xX0r, h4XX0r.
I've lost everything to that h4xx0r! He should learn to do things properly, because he is only ruining for other!