To split hairs is to argue over differences too fine to matter. You are splitting hairs.
To split hairs is a complaint, and whether it is fair depends on whether the difference matters. Lawyers are paid to split hairs, since sometimes the fine difference is the whole case.
1phrasesplit hairsTo argue over differences too fine to matter.
“Arguing about those two words is to split hairs.”
split hairs is a phrase.
Practised in Idioms