/ˌmælˈpræktɪs ||; mælˈpræktɪs/noun [U] [C] (law法津) careless, wrong or illegal behaviour while in a professional job 玩忽职守；渎职；舞弊: medical malpractice 治疗失当He is standing trial for alleged malpractices. 他因涉嫌营私舞弊而接受审讯。