Those friends of Simon's have a bad influence on him.
الإنجليزية - الإنجليزية
تعريف bad influence في الإنجليزية الإنجليزية القاموس.
something or someone that teaches others to do wrong or to make them have bad thoughts about someone or encourages wrong actions and thoughts by example
girlfriend bad influence on my son, how can I get him to dump her.
{i} power to effect things in an undesirable or negative way; something or someone that has an undesirable effect