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Longman Dictionary of Contemporary English
swearing-in
noun
COLLOCATIONS FROM OTHER ENTRIES
a swearing-in ceremony (=in which someone starting a public job promises to do it well)
▪ the presidential swearing-in ceremony
EXAMPLES FROM OTHER ENTRIES
▪ The swearing-in took place at 12:05 p.m.
EXAMPLES FROM CORPUS
▪ And she may not show up for the swearing-in and other inaugural festivities the following day.
▪ It is inevitable that a campaign that strikes few sparks be followed by a lackluster swearing-in.
▪ Since her swearing-in last month, McCarthy has made a point of working on issues other than gun violence.

Usage examples of "swearing-in".

On a day patented for secresy, and swearing-in the whole American Continent through the cables to keep the secret by declaring the patent, the Rev.

Jason Merlin, Chief Justice of the United States Supreme Court, finished the swearing-in oath, and the-new President shook his hand and stepped up to the microphone.

At his swearing-in ceremony, decked out as usual in full dress uniform and a chestful of ribbon candy, the new chief laid out his number one priority: zero tolerance for any infractions by police officers.