Immature

[Mark Zuckerberg]

Not mature; unripe; not arrived at perfection of full
development; crude; unfinished; as, immature fruit; immature character;
immature plans.

[Gregory]

Doing [whatever it takes] to make you happy and for some people, at least theyre being who they are and not the stereotype of who theyre supposed to be. Your [inner child]. Most people believe that age defines who you are and if you dont act your age, youre immature. Mature people seem to be very depressed and [settle] for everything even if they dont want it.

[Renato]

An [opinion]. someone created it so [others] would [act like] them

[Julene]

An [overused] term used by [hypocrite] teenagers (as in, 99%) to describe anyone or any opinion that they [dislike].

[Dianne]

someone who looks for all [the dirty] words in a [dictionary] [first].

[Jason Yan]

One who abuses [drugs] to feel [grown] up.
One who abuses [alcohol] to feel grown up.
One who calls people immature.

[Jessica]

Someone who:
1: constantly makes penis or [fart jokes]
2: praises their name on urbandictionary.com by saying it means huge penis or [awesome person]
3:makes fart noises with their mouth and/or arm
4: calls everything and everyone they dont [like gay]

[Luis Fok]

Not fully developed.

[Raeanne Dimick]

In a [generic] age-irrelevant [view] of the [concept]: someone who wouldnt or cant get himself to do what they know is the right thing to do.

[Vania]

-People who insult everyone who has a [different opinion] than theirs, usually with a personal, racial, or gay slur.
-People who become alcoholics and/or do drugs just because “it’s cool.”
-People who tend to be [impulsive]; an example of which, is a tendency to use unwanted physical contact on another person, or making statements in complete ignorance.
-People who act like a bitch because someone doesn’t want to do something for them.
-People who only ever need you to use you.
-People who behave like [hypocrites] too often.
-People who constantly bitch about their life when they have it better than who they are bitching to, or for attention.
-People who talk shit because they’re insecure about themselves, then get upset when the person finds out.
-People who offensively use words that are not interchangeable because they are too ignorant to [educate] themselves.

[Kai]

A [childish] [person].

[Julene]

A [childish] [person].

[Couch Potatoe]

not behaving in a way that is as calm and wise as people expect from someone of your age: