umpire

/ˈəm-ˌpī(-ə)r/

Middle English oumpere, alteration (from misdivision of a noumpere) of noumpere, from Anglo-French nounpier, nompere, from nounpier, adjective, single, odd, from non- + per equal, from Latin par

noun

  1. an official in a sport who rules on plays

  2. one having authority to decide finally a controversy or question between parties: such as

  3. one appointed to decide between arbitrators who have disagreed

verb

  1. to supervise or decide as umpire

  2. to act as umpire