/ˈʌm.paɪərɪŋ/
VERB
The act of supervising a sporting contest as an official, enforcing the rules, and ensuring fair play.
Serving as an official who monitors a sporting competition, applies its rules, and makes decisions during play.
VERB
The act of making an official judgment or decision while serving as an impartial authority in a game or dispute.
Evaluating a situation, considering evidence or opposing positions, and reaching an authoritative judgment or decision.