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
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Just because you're in high school doesn't mean people cannot be immature. Maturity is nothing but a mere joke.
by StraightFMan April 10, 2006
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the act of being immature
Your actions are full of immatureness
by ron January 18, 2005
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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
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someone who cannot control their emotional behavior
Some people can act immature when they feel they are attacked.
by Gerard Irick March 24, 2010
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by revisiting old posts we were able to witness the immaturation of the internet from a place of cordial dissent to whiny bickering.
by kris takahashi August 26, 2009
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The process of becoming less responsible and capable over time.

Often a trait of a middle-aged person who has given up on taking care of themselves - either due to personal choice or unforeseen, unfortunate circumstances. Someone who is immaturing was more capable and responsible as a young adult than at their current older age. They often displace their burdens on people who care about them.
She's 53 and immaturing; I find it hard to believe she was ever able to pay her own bills.

After Jeff lost the business he started immaturing, now I hear he's trying to move in with his kids.

My mother-in-law has been steadily immaturing since her divorce 15 years ago.

At the rate bob is immaturing, he'll likely be fired in 6 months.
by GummieGirl August 31, 2017
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