"Criminal behaviour" refers to actions that go against the law and are considered illegal. It includes activities such as stealing, hurting others, or breaking rules that can lead to punishment by the legal system. Full definition
However, he cautions that the existence of early predictors of criminal behaviour does not mean that some children are born criminals. (newscientist.com)
It is most common in late adolescence but can progress to entrenched criminal behaviour in adulthood. (psychlopaedia.org)
Is bad behaviour (or even criminal behaviour) away from work a good enough reason to sack someone? (canadianbusiness.com)