Definitions of delinquent
(UK) a person, especially a young person, who acts in an illegal, unacceptable or antisocial way; an official organisation or state that acts in an illegal, unacceptable or antisocial
The Scottish Conservatives have dismissed Labour proposals for dealing with delinquent children and football hooligans.
(US) a young person who commits minor crimes, but who cannot be sentenced as an adult
All of the under 16s in his street had either been adjudicated delinquent or found guilty of a serious offense.