他那爱挑剔的性格让同事们都避之不及，连标点符号的错误都要指出来。

His captious nature made colleagues avoid him, as he would point out even punctuation mistakes.

captious 是形容词，来自拉丁语 captiosus（"诡诈的"），由词根 capt-（"抓住"）和后缀 -ious（"充满...的"）组成。这个词形容一个人过分挑剔、吹毛求疵，喜欢抓住小错误不放的性格特点。