arbiter
person with authority to judge or decide
Root
- arbitr: judge, decide, or act as arbiter
Other words with the arbitr root
- arbitrary: based on whim rather than reason
- arbitrate: to settle a dispute as a neutral judge
- arbitration: settlement of a dispute by an arbiter
An arbiter decides between claims.
The professor became the arbiter of the dispute.
Picture two sides at a table and one person holding the final line.