Immature

The adjective boring people use to describe fun people.

JK: "Nip slip!"
Maren: "You're so immature"
JK: "You're so boring"
Maren: "I know"

by jmfk November 18, 2014

Immature

Immature is a person, usually 8-15 year's old, (and mostly male) who think sexual and inappropriate things are funny.
This drives me totally crazy, when your the only kid of you age that is way more mature then everybody else areound you (like me)
They call everything they don't like gay, or retarded, and anybody smarter than them a nerd, because they are to incapable of realizing that they are stupid, and (not to be hypocritical) retarded...

-Immature person- You got high honor roll in school? Hahahha! Your such a gay nerd!

-Civilized person- Your immaturity is making yourself look bad...Not me

by TheJazzKidOfTheSchool666 June 25, 2009

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

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

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