- juvenile - of or relating to or characteristic of or appropriate for children or young people; "juvenile diabetes"; "juvenile fashions"
- adolescent, jejune, juvenile, puerile - displaying or suggesting a lack of maturity; "adolescent insecurity"; "jejune responses to our problems"; "their behavior was juvenile"; "puerile jokes"
Antonym: mature (indirect, via immature)
- adolescent, jejune, juvenile, puerile - displaying or suggesting a lack of maturity; "adolescent insecurity"; "jejune responses to our problems"; "their behavior was juvenile"; "puerile jokes"
- juvenile, juvenile person - a youthful person
--1 is a kind of person, individual, someone, somebody, mortal, human, soul
--1 has parts: juvenile body
Antonyms: adult, grownup
--1 has particulars:preteen, preteenager; adolescent, stripling, teenager; child, kid, youngster, minor, shaver, nipper, small fry, tiddler, tike, tyke, fry, nestling; ingenue; young person, youth, younker, spring chicken