Arbiter(noun)
A person who settles a dispute or has ultimate authority in a matter.
Hindi meaning:न्यायकर्त्ता, मध्यस्थ, पंच
Synonyms: Umpire, Adjudicator, Mediator, Judge, Refree
Example: If the two parties can’t peacefully solve their disagreement, then a civil judge will act as an arbiter.
Trick to remember: Art chori kar li to arbiter ne case solve kiya. 
