arbiter

Từ điển American Heritage Dictionary 4th

ar·bi·ter (ärʹbĭ-tər)n.
1. One chosen or appointed to judge or decide a disputed issue; an arbitrator.
2. One who has the power to judge or ordain at will:
an arbiter of fashion.
See Synonyms at judge. [Middle English arbitre, from Old French, from Latin arbiter, of Phoenician origin. See ʿrb in Semitic Roots.]

• Từ đồng nghĩa / Synonyms:
  arbitrator, umpire, supreme authority