—n.
1 a person chosen to enforce the rules and settle disputes in various sports.
2 a person chosen to arbitrate between disputants, or to see fair play.
—v.
1 intr. (usu. foll. by for, in, etc.) act as umpire.
2 tr. act as umpire in (a game etc.).
Derivatives:
umpirage n. umpireship n.
Etymology: ME, later form of noumpere f. OF nonper not equal (as NON-, PEER(2)): for loss of n- cf. ADDER
Useful english dictionary. 2012.