malpractice

1. N-VAR If you accuse someone of malpractice, you are accusing them of being careless or of breaking the law or the rules of their profession. 瀆職; 玩忽職守[正式]

There were only one or two serious allegations of malpractice. 只有一兩起嚴(yán)肅的瀆職指控。