This is the 7886th most frequent Polish word.
mistrzem
"Master" or "champion."
Indicates being a champion/titleholder.
On jest mistrzem świata w szachach.
He is the world champion in chess.
Denotes expertise or mastery in a skill.
Stał się mistrzem w gotowaniu potraw azjatyckich.
He became a master at cooking Asian dishes.
Refers to someone being a master or expert in their field.