「捉字蝨 / 捉字虱」

(pos:動詞)
<explanation>
yue:專挑人哋用字嘅錯處，當係#蝨 噉捉
eng:to find fault with the choice of words; to be fastidious about wording; literally: to pick up a flea from a word
<eg>
yue:佢個人好鬼衰㗎，專捉人字蝨，次次都窒住晒。 (keoi5 go3 jan4 hou2 gwai2 seoi1 gaa3, zyun1 zuk1 jan4 zi6 sat1, ci3 ci3 dou1 zat6 zyu6 saai3.)
eng:He's a very bad guy. He always finds fault with others' choice of words and keeps interrupting.
<eg>
yue:呢個人淨係識得捉人字蝨，根本俾唔到咩實際建議！ (ni1 go3 jan2 zing6 hai6 sik1 dak1 zuk1 jan4 zi6 sat1, gan1 bun2 bei2 m4 dou2 me1 sat6 zai3 gin3 ji5!)
eng:This guy only focuses on fault with the choice of words, without any practical advice!