1. A noob is a person who really sucks at a game but refuses to learn/listen to people who are skilled. Many of them may have been playing the game for a while, but still suck at it. They usually have no hope.

2. Noobs generally get extremely upset over being beaten and can not admit that they are bad at the game. Often they will accuse the skilled people of hacking.

3. This word is an insult in general so people often wrongly use it and just call somebody that they do not like a noob, regardless of skill.