malpractice

名词 malpractice:

1. professional wrongdoing that results in injury or damage
2. a wrongful act that the actor had no right to do; improper professional conduct

1. Various malpractices by police officers were brought to light by the enquiry.
   警察的各种不法行为经调查已揭露出来。

mal.prac.tice

n.（名词）
Improper or negligent treatment of a patient, as by a physician, resulting in injury, damage, or loss.
治疗失当：例如由于内科医生对病人不当的或草率的治疗而导致的受伤、损伤或损失
Improper or unethical conduct by the holder of a professional or official position.
渎职：专业人员或官员不良的或不道德的行为
The act or an instance of improper practice.
不端行为：不良行为的行动或例子

【引伸】
mal.practi.tioner