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1. The act of umpiring
   "the officiating was excellent";
   - umpirage, officiation, refereeing

1. Act in an official capacity in a ceremony or religious ritual, such as a wedding
   "Who officiated at your wedding?"
    
2. Perform duties attached to a particular office, place or function
   "His wife officiated as his private secretary";
   - function

Type of: deciding, decision making, perform, serve

Encyclopedia: Officiate