出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第264页（201字）
比喻恶患不除，终受其害，例你明知他心存不轨，却仍不开除他，岂非养痈贻患?
You are looking for trouble to keep him on the job whom you know to be unreliable and should be dismissed instead．