To be fastidious or over-critical about phrasing, diction, or specific choice of words.

wording; diction; characters; choice of words

To nitpick or find fault with someone's choice of words or phrasing

To meticulously study or weigh one's choice of words; to pay close attention to diction when writing or speaking

to find fault with the choice of words; to pick holes in what someone says; to be overly critical of wording

(erhua variant) a grammatical function word such as a particle or conjunction; same as [[虚字|虛字|xu1 zi4]]