final
arbiter
The courts are the final arbiters when it comes to interpretating the law.
The committee will submit its findings to the chief executive, who will act as the final arbiter.
The European Court of Justice is the final arbiter over disputes between member nations.
SMART Vocabulary: related words and phrases
People who analyse and judge
adjudicator
arbiter
basher
censor
class warrior
critic
criticaster
empiricist
examiner
external examiner
judge
jury
monitor
official
panel
panellist
rating agency
reviewer
star chamber
sub-panel