officiate
verb
- to function as an officer of a duty, such as a priest or referee
Wiktionary
Pronunciation: /əˈfiʃ.i.eɪt/
noun
Etymology: Borrowed from Latin officiātus, perfect participle of Late Latin officior (“to perform a function”) and of Medieval Latin officiō (“to officiate, say mass (9th cent.); to serve a church (13th cent.); to serve (early 13th c., 14th in British sources); to discharge an office (14th c.)”), from Latin officium (“official duty, service”), see -ate (verb-forming suffix). The noun is derived from Medieval Latin officiātus (“monk in charge of a monastic office, official (start of 12th c., 14th in British sources)”), substantivized from the participle, see -ate (noun-forming suffix).
- A person appointed to office, an official.
verb
Etymology: Borrowed from Latin officiātus, perfect participle of Late Latin officior (“to perform a function”) and of Medieval Latin officiō (“to officiate, say mass (9th cent.); to serve a church (13th cent.); to serve (early 13th c., 14th in British sources); to discharge an office (14th c.)”), from Latin officium (“official duty, service”), see -ate (verb-forming suffix). The noun is derived from Medieval Latin officiātus (“monk in charge of a monastic office, official (start of 12th c., 14th in British sources)”), substantivized from the participle, see -ate (noun-forming suffix).
- To perform the functions of some office.
“She officiated as registrar at the wedding.”
“She officiated the wedding as registrar.”
- To serve as umpire or referee.
“This is the second time he has officiated at a cup-final.”
“He's never officiated a cup-final before.”