officiate
/əˈfɪʃiˌeɪt/
- Verb
- to perform the official duties of a ceremony
- Our parish priest officiated at our wedding.
- The mayor officiated at the opening of the new public library.
- The bishop officiated the memorial Mass.
- to be a referee, umpire, or judge at a game, tournament, etc.
- She officiated at the tennis match.
- Two referees officiated the hockey game.