Meaning & Definition of Juvenile in English

1. A young person, not fully developed

1. Of or relating to or characteristic of or appropriate for children or young people

• "Juvenile diabetes"

• "Juvenile fashions"

2. Displaying or suggesting a lack of maturity

• "Adolescent insecurity"

• "Jejune responses to our problems"

• "Their behavior was juvenile"

• "Puerile jokes"