"officiating" in the noun sense
1. umpirage, officiation, officiating, refereeing
the act of umpiring
"the officiating was excellent"
"officiating" in the verb sense
1. officiate
act in an official capacity in a ceremony or religious ritual, such as a wedding
"Who officiated at your wedding?"
2. officiate, function
perform duties attached to a particular office or place or function
"His wife officiated as his private secretary"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License