Nub is a scornful name for a beginner, a salagi, an inexperienced young man or, thank God, a girl who is not very familiar with the rules of the behavior of the community and therefore among the old-timers who are sitting as a flawed and underdeveloped being. The word is used, mostly in forums and in ondine games.
The English word "noob" is a warped "newbie", that is, simply a "beginner". Beginners, as you know, do not like anywhere else, except, perhaps, the financial pyramids. Therefore, the status of the nuba is a vicious brand, from which it is better to get rid quickly, learning the rules of the game and starting to mow under his.
Noob is in the list: Slang