iMature 

Someone who is a smart user of Web 2.0 Internet tools such as social/professional networking platforms, online discussion forums, blogs etc. An iMature person would have an impressive virtual personality.

Alice still looks like a novice on Internet, but Bob is quite iMature.

iMature by SavvyGuru May 9, 2011

immature 

What one redneck says to another when he wants his chair back.

Hey, you done sat immature and I be wanting it back.

immature by Chase1204 April 14, 2008

immature 

98% of the people on Urban Dictionary

"GEORGE W. BUSH" - Wanker. (Definition by OMGWTFMAN346)

immature by UberMan5000 March 27, 2004

Immature 

An opinion. someone created it so others would act like them

Kid A: Dude i touched it and it got hard

Kid B: THATS WHAT SHE SAIDD!!!

Kid A: you're so immature

Kid B: F*ck you

Immature by Hemesath May 13, 2010

immature 

Doing whatever it takes to make you happy and for some people, at least they're being who they are and not the stereotype of who they're supposed to be. Your inner child. Most people believe that age defines who you are and if you don't "act your age", you're immature. "Mature" people seem to be very depressed and settle for everything even if they don't want it.

Stuck up bitch: Why is that girl coloring in a spongebob coloring book? She's so immature.

Other person: At least she's doing what makes her happy, bitch.

immature by hofosho23 December 2, 2010

Immature Autist Delusion 

When ignorant people delude themselves and think that all autists are immature mainly due to mental retardation. This is of course false as most autists have been proven to be highly intelligent and mild functioning and autism itself isn't a mental illness. It is more of a developmental disorder and the more emotionally immature autists would generally be referred to as the Spergs.

Too much people suffer from immature autist delusion. I can guarantee you right now that I may be autistic but I always strive to be highly mature.

Immature Autist Delusion by CelticEagle February 15, 2019

immature 

An overused term used by hypocrite teenagers (as in, 99%) to describe anyone or any opinion that they dislike.

Twilight fan #1: OMG that guy totally said Twilight is the boringest story EVER!!!

Twilight fan #2: OMG, he's so immature!!!

immature by lklkj98k November 1, 2009