[um.pire] n [ME oumpere, alter. (fr. misdivision of a noumpere) of noumpere, fr. MF nomper not equal, not paired, fr. non- + per equal, fr. L par] (15c) 1: one having authority to decide finally a controversy or question between parties: as a: one appointed to decide between arbitrators who have disagreed b: an impartial third party chosen to arbitrate disputes arising under the terms of a labor agreement
2: an official in a sport who rules on plays
3: a military officer who evaluates maneuvers
[2]umpire vb um.pired ; um.pir.ing vt (1609): to supervise or decide as umpire ~ vi: to act as umpire