n.
- (in certain sports) an official who watches a game or match closely to enforce the rules and arbitrate on matters arising from the play.
- a person chosen to arbitrate between contending parties.
v.
act as umpire in (a game or match).
Derivative
- umpirage n.
- umpireship n.
Etymology
ME (orig. as noumpere): from OFr. nonper ‘not equal’; the n was lost by wrong division of a noumpere.