arbiter
🇺🇸
/ˈɑːrbɪtər/
🇬🇧
/ˈɑːbɪtə(r)/
A person who makes decisions or judgments about what is best or most appropriate.
The teacher acted as an arbiter to resolve the students' argument.
선생님은 학생들의 논쟁을 해결하기 위해 중재자로서 행동했습니다.