1. to perform the duties of an office or position of authority
2. to act as a referee or umpire in a sports game
Usage: sports
3. to perform a religious ceremony, especially a wedding or funeral
Usage: religious

Examples

• The mayor will officiate at the ribbon-cutting ceremony.
• She was asked to officiate the wedding of her best friends.
• The experienced referee will officiate tonight’s championship game.
• The priest officiated at the funeral service.
• He officiates as the chairman of the board meeting.
• The judge officiated over the court proceedings.
• Who will officiate the basketball tournament finals?