Adolescent
Part of speech: adjective
Definition: Characteristic of, or relating to, or undergoing adolescence; immature.
Part of speech: noun
Definition: A teenager; a juvenile after puberty
Example sentence: I don't write about adolescence. I write about war. For adolescents.
Puerile
Part of speech: adjective
Definition: Characteristic of, or pertaining to, a boy or boys; confer: puellile.Childish; trifling; silly.