Behaviour, especially of a young person, that is illegal or not acceptable to most people. (Cambridge Dictionary)
Conduct that is out of accord with accepted behaviour or the law. (Merriam – Webster)
Delinquency is criminal behaviour, especially that of young people. (Collins Dictionary)
Delinquency is failure to pay a debt or tax. (Collins Dictionary)
Minor crime, especially that committed by young people. (Oxford Dictionaries)
Delinquency and Malfeasance.