Noob (also commonly spelled as n00b, newb, nOOb or nub) is an internet slang used as an insult for a stupid, annoying, new or inexperienced player. The word is a misspell of "newb" (short for "newbie"), which means an inexperienced newcomer to a particular activity. After a long time of use, the misspelled "newb" became its own word. To this day, people are constantly confusing "noob" with "newb", claiming that it means a new or inexperienced player, but that is not usually the intention of the user of the word.
Players usually call other players a noob when they are irritated, annoyed, upset, or angry, with the intention to mock another player, or belittle them if they defeat them at an activity. However, people also typically call others a noob simply as trash talk or as an insult.
"Noob", despite much confusion, is not synonymous with "newbie" ("newb" for short) in the ROBLOX community, as well as most of the internet. While "noob" is slang for a stupid, annoying, or inexperienced player, "newbie" or "newb" is used as a more literal term for an inexperienced or new player to an activity. However, "newbie" can also be used as an insult. Sometimes people also call people with no ROBUX noobs. Usually people that brag about their ROBUX use noob for this meaning.
Most users associated with being a noob usually wear the default outfit.
With the July 2014 update, new users were given a generic shirt, dark green jeans, a light grey body, the "Smile" face and the 3.0 version of the male/female packages, but male users are given Pal Hair instead of 3.0 hair, and without the 3.0 faces. Though male accounts created in or after July 2014 received the Pal Hair for free, accounts created before July 2014 have to buy the hair for 90 ROBUX. Users think that the reason 3.0 faces aren't given to them are because new users may think ROBLOX is a realistic site, ignoring the aspects. By 2016, new male users are given the ROBLOX Boypackage, new female users are given the  Girl package. A short time after tickets removal, a rare glitch would occur: a player would have no items and have the same colors as their randomly generated torso colors. New players now sometimes have R15 enabled as they create their account. Users of the BoyPackage are commonly referred to as "bacon hairs".
Outdated default avatars
A traditional noob look included a blue torso, green leg limbs, and yellow head and arms. This was the default look for all new users' avatars from 2006 to 2011. Which delay to load used to display the traditional noob look, but was replaced with medium-grey color that covered the whole body. An update in 2011 changed the appearance of a new 's avatar; these ROBLOXians would usually start out with a randomly colored torso, limbs, and either the male or female 1.0 packages.
With the option for players to select a gender for their account came changes to the default "noob" look. The avatars for new users that chose male avatars had a Red Roblox Cap as their default hat. Female avatars came with the Pinktastic Hair that comes along with the 1.0 ROBLOX Girl package.
Many players are hating on newbies due to them making their team lose, being incredibly annoying, etc.
The use of the word "noob" as an insult may seem funny to some users, but to others, it is very annoying. People often insult those who win or lose against them, those who made their team lose, those who ask for ROBUX, etc. It may even be used to mock a user.
People even make groups, shirts or T-Shirts which shows their hatred towards newbies.