immature

what people call you when your a teenager and your doing something fun for little kids. Usally people say this to make themselves feel older and more mature even though there not.

Sam: Dude wanna go have a mud fight!
Kevin: Your so immature, thats for little kids.
Sam: Fuck you at least I'm not an asshole.

by a-manster August 14, 2006

immature

In a generic age-irrelevant view of the concept: someone who wouldn't or can't get himself to do what they know is the right thing to do.

Someone who likes someone else but wouldn't act upon it; simply cause they are too immature to do what normal people would do.

by s-bandt November 6, 2011

Immature

A young person, usualy a 8-14 year old male that knows 100+ words that mean penis and lives his life just to have them all published in an on line dictionary of slang.

Oh my! You knew that another word for penis is pennyprick! How immature of you to try publish it.

by Tenarr July 1, 2005

immaturity

an unwillingness to recognize, like those around you, that your head is up your rear end, and you like it there.

by deviant May 8, 2003

immature

What many high school students are. Nuff said.

Just because you're in high school doesn't mean people cannot be immature. Maturity is nothing but a mere joke.

by StraightFMan April 26, 2006

immatureness

the act of being immature

Your actions are full of immatureness

by ron January 18, 2005

Immature

Someone who thinks vulgar words are funny. Most children exhibit this behavior.

Child: I drew a butt! Ha ha ha! Me: That's not funny. That's immature.

by spel itt rite January 16, 2006