User blog comment:Ajedi32/Vandalism Attacks/@comment-3540726-20110620002440/@comment-1527399-20110620012918

"Noob" is a slang term, so its meaning can vary a lot. Generally, "noob" a person who acts immature or like a jerk. It is also commonly used as an insult. "Newbie" is what you usually say when you're just referring to someone who is simply new. Check urban dictionary.