Immature

95% of 13 year-old Boys.

by Glittery Goddess June 23, 2004

People who are annoying, don't know what they are talking about, and sometimes bitch way to much.

Look up Nu-Metal and you'll find many examples of the bitching part of immaturity.

by Drummer November 11, 2004

Immaturerness

a person who is silly or acts in a childish way

WELL I'LL JUST PACK UP MY BAND WAGON OF IMMATURERNESS AND HITCH UP A RIDE DOWN TO MEXICO!.

by pillow fan December 11, 2010

An early 90's Boy Band. Lead Singer Marques Houston followed by Jerome Jones, and Kelton Kessee. Managment By Chris Stokes.

Early 90's Boy Band by the nameof Immature

by 90's Man October 2, 2008

Someone who maybe be irresponsible unorganized and does little kid things but all in all is a fun person!

A: MUD FIGHT!!
B: Your so immature.

by ieezsooperawzumninja February 15, 2010

A made-up word that conceited tweens like to throw around at people who aren't conceited tweens.

Boy: Hey. so.. did you score with that guy last night?
Girl: You're so immature!!!!1
Boy: Fucking cunt.

by someone or other February 15, 2005

The act of being like a little brat, making bad or mean jokes, or just being a little Timmy.

The one reason I don't trust urban dictionary is that everyone is so immature.

by SmolTiger February 2, 2021