What's a word for "teenager-ish"?
I am looking for a word that encapsulates "teenager-ish" - that sort of petulant, contrarian, immature behavior. Any ideas?
Juvenile: immature; childish; infantile: His juvenile tantrums are not in keeping with his age.
Sophomoric: 2. childish, adolescent, juvenile.
I'm not sure it works for English, but in France we refer to that kind of behavior as "adulescent," a neologistic blend of "adult" and "adolescent."
Consider also "teenish," "Peterpannish," "cubbish," and "jejune."