juvenile delinquent
US /ˈdʒuːvənaɪl dɪˈlɪŋkwənt/
UK /ˈdʒuːvənaɪl dɪˈlɪŋkwənt/

1.
少年非行者, 非行少年
a young person who is not yet old enough to be considered an adult and who has committed a crime or who behaves in a way that is illegal or not acceptable
:
•
The court referred the juvenile delinquent to a rehabilitation program.
裁判所は少年非行者を更生プログラムに送った。
•
His parents were worried he was becoming a juvenile delinquent.
彼の両親は彼が少年非行者になることを心配していた。