pedant
US /ˈped.ənt/
UK /ˈped.ənt/

1.
pedante, pignolo
a person who is excessively concerned with minor details and rules or with displaying academic learning
:
•
He's such a pedant, always correcting everyone's grammar.
È un tale pedante, sempre a correggere la grammatica di tutti.
•
The professor was known as a pedant for his strict adherence to obscure rules.
Il professore era conosciuto come un pedante per la sua stretta aderenza a regole oscure.