Noob

For those seeking a more detailed article on the subject of this page, Wikipedia also has an article on Newbie.

Noob is a term players use to refer to both new players (newbies) and, disparagingly, to veteran players who perform poorly. People tend to use newbie or newb to refer to actual novices and noob, n00b, nub, or nawb to suggest that someone is playing like a new player.