Definition of ill-behaved in English:

ill-behaved

adjective

  • Behaving badly.

    ‘the most ill-behaved lot of kids and pets you've ever seen’
    • ‘And his predicament is making life a misery for his identical twin brother Mark, who is finding it more and more difficult to persuade publicans he is not his ill-behaved brother.’
    • ‘For a start, there is the disruption to other children in school who suffer from the disturbances caused by ill-behaved pupils and who take up more and more of the teachers' time.’
    • ‘That they disintegrated to an ill-behaved rabble, with senior players in open dissent, was unforgivable.’
    • ‘My own view is that people are ill-behaved when drunk because they know that there are no effective punishments for serious crimes like stabbing assaults let alone minor vandalism.’
    • ‘The end result is that Zachery is now suspended from playing anything on the computer for the next three days (or longer, if he is ill-behaved anymore).’