Well I don’t think it’s acceptable to tell him to keep it for home as that's giving the impression it’s ok at places other than your house MOnica
I think there is still so little information Does the child hit everyone or only mum and dad, does he hit brothers or sisters, does he start fights at school? some children are emotionally behind and it often seems to be boys My teenage grandson is years behind his younger sister in emotional ability but ahead in physical abilities He used to run out if playschool at 3 and hit his mum as a greeting all the other kids came out and hugged their mums he used to completely muddle up love and anger but he’s a very normal boy and gets love right now ?
Your grandson may be a spoiled brat being the youngest, he may be on the autistic/ ADHD spectrum, he may be unsure of how to make his voice heard in this world of adults and older children, he may be insecure, he may be bullied, he may be coping older children outside the home, he may be trying to tell you something, he may have suppressed anger or he may just not have learned the pecking order
I think your original post is strange why are you asking when you know the answer
I m concerned at your post that says ‘ the other children are lovely and a joy to be with’ as that is already dividing him off as ‘ the difficult one, the black sheep ’ he will pick up on those feelings and probably act up all the more
Does he hit you if you say no ?