OFFICIATE

verb (-ated; -ating) Date: 1623 intransitive verb to perform a ceremony, function, or duty , to act in an official capacity ; act as an official (as at a sports contest), transitive verb to carry out (an official duty or function), to serve as a leader or celebrant of (a ceremony), to administer the rules of (a game or sport) especially as a referee or umpire, officiation noun