razer
n. C2 Proficiency raz·er
n. a person who is very good at a specific skill, especially in sports or games. It is a short way of saying 'ace' or 'expert'.
n. an expert or highly skilled practitioner in a specific field, particularly in competitive sports or gaming. Slang in register; derived from the word 'ace'.
He is a total razer at chess.
The team hired a razer to help them improve their strategy before the championship.
While the rest of the squad struggled with the new tactics, the razer on the team adapted instantly, leading to a decisive victory.
From raze + -er.