1. He was negligent of his duty.
    他玩忽职守。

1. 疏忽：第一个层次的犯罪本体要件包括犯罪行为( actus reus)和犯意(mens rea)两个方面的内容. 犯罪行为包括三个部分,即行为、结果和相关重要情节. 犯意包括蓄意( intent) 、轻率( recklessness)和疏忽( negligent)三个方面.

2. 忽视的, 粗心大意的：confidential 机密的 | 21) negligent 忽视的, 粗心大意的 | negligible 可忽视的

3. 疏忽,怠忽的：neglect 忽略,不顾 | negligent 疏忽,怠忽的 | negligible 很小的

1. 疏忽的;玩忽职守的;失职的
    If someone in a position of responsibility is negligent, they do not do something which they ought to do.

    e.g. The jury determined that the airline was negligent in training and supervising the crew...
           陪审团裁定航空公司在对全体机组人员的培训和管理问题上存在疏漏。
    e.g. The Council had acted in a negligent manner.
           市政会的做法属于失职。

2. 随便的;放松的;不修边幅的
    If you describe a person''s movements or manner as negligent, you mean that they look relaxed and informal.

negligent的反义词

    e.g. Laura acknowledged this compliment with a negligent wave of her left hand...
           劳拉随意挥了挥左手算是听到了这个赞扬。
    e.g. She stood in the doorway, one hand above her head in a negligent pose.
           她站在门口，一只手放在头上，很随意的样子。

1. characterized by neglect and undue lack of concern

    e.g. negligent parents
           negligent of detail
           negligent in his correspondence