Immature

Someone who acts annoying and stupid.

95% of 13 year-old Boys.

by Glittery Goddess June 23, 2004

Immature

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 12, 2010

Immature

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 January 15, 2009

Immature

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 14, 2010

immaturity

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 June 18, 2005

Immature

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