arbiter

an arbiter of taste.

Andrew was the arbiter of the disagreement.

an arbiter of fashion.See Synonyms at judge

The arbiter will have the last say in resolving this dispute.

the military acted as arbiter of conflicts between political groups.

a critic who considers himself the supreme arbiter of literary taste. Less oftenarbiter is used interchangeably with arbitrator. Areferee is an attorney appointed by a court to make a determination of a case or to investigate and report on it (

Molecular pathways that intersect as arbiters in this phenomenon include instigation of alloimmune activation associated with tobacco smoke–induced inflammation.

Perhaps the future role of the sedimentary petrologist will be as an interpreter and an arbiter of cases too complex for the machine to decide unaided.

The mayor appointed an experienced arbitrator to mediate between the sides and resolve the transit strike. Anarbiter is one who may or may not have official status but whose opinion or judgment is recognized as being unassailable or binding: