Top Definition
A group of teenagers that are going through a crises of wanting to be an adult,out own their own,or feelings of not being treated fairly. Teenagers may have random out burst.
The girls and boys are going through teenagerism, because they can't have it their way.
by Connie M.S. McClinton January 14, 2008
An act of discrimination against teenagers such as racism, sexism or general ageism.
Shop owner: only two teenagers in the shop at one time.
Teenager: Thats teenagerism!
by hannahTAD February 25, 2010
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