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

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

immature

someone who cannot control their emotional behavior

Some people can act immature when they feel they are attacked.

by Gerard Irick March 24, 2010

Immature

What people who post definitions to this site are best at.

Bob: Hey, did you see that definition on Urban Dictionary?
Frank: Yeah, it was immature at it's best. o_o

by TheOrlyGuyLol January 24, 2010

Inmature

Improper word usage of immature or as some may say, "inproper word usage."

Recently hatched chicks are inmature chickens.

by Garry Morgan October 15, 2008