He began to neglect his appearance after losing his job.

neglect 是动词，意思是"忽视、忽略"，指没有给予应有的关注或照顾。这个词来自拉丁语 neglegere，由 neg-（表示"不"）和 legere（表示"选择、收集"）组成，字面意思是"不选择、不关心"。