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Related to swear in: swear off, swear blind, sworn off, swore up and down
swear someone in (as something)
to administer an oath to someone who then officially begins in office. The judge swore Alice in as street commissioner. The judge swore in Alice as the new director.
swear somebody inalso swear in somebody
to get a formal promise from someone to be honest A ceremony to swear in the new governor took place Wednesday. The witness took the stand after the court clerk swore her in.
Administer a legal or official oath to, as in The new mayor will be sworn in tomorrow. [c. 1700]
To administer a legal or official oath to someone: The police department swore in 15 new officers. The Chief Justice will swear the new President in.