Used when someone is leading or running a formal event like a wedding or funeral. After decades, he still officiates at military honors ceremonies.
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Formality
The term implies a sense of formality and often requires official authority or position. The mayor is expected to officiate at the parade's opening ceremony.
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Religious Context
Frequently used in a religious context, indicating a leader's role in a service or ritual. The priest officiated at the couple's 50th wedding anniversary mass.