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officiate

[ uh-fish-ee-eyt ]
/ əˈfɪʃ iˌeɪt /
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See synonyms for: officiate / officiated on Thesaurus.com

verb (used without object), of·fi·ci·at·ed, of·fi·ci·at·ing.

to perform the office of a member of the clergy, as at a divine service.
to perform the duties or function of some office or position.
to serve as referee, umpire, or other official in a sports contest or game.

verb (used with object), of·fi·ci·at·ed, of·fi·ci·at·ing.

to serve as the priest or minister of (a divine service, religious ceremony, etc.).
to perform, carry out, or fulfill (an official duty or function).
to act as a referee, umpire, timekeeper, or other official for (a sports contest or game).

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Origin of officiate

First recorded in 1625–35; from Medieval Latin officiātus (past participle of officiāre “to serve”), equivalent to Latin offici(um) “service, duty” + -ātus, past participle suffix; see office, -ate1
of·fi·ci·a·tion, nounof·fi·ci·a·tor, nounun·of·fi·ci·at·ed, adjectiveun·of·fi·ci·at·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for officiate

officiate
/ (əˈfɪʃɪˌeɪt) /

verb (intr)

to hold the position, responsibility, or function of an official
to conduct a religious or other ceremony
officiation, nounofficiator, noun
C17: from Medieval Latin officiāre, from Latin officium; see office
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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