swear somebody ↔ in phrasal verb [usually passive] (see also swear)
if someone with a new public job or position is sworn in, they make an official promise to do their duty well:
The new governor will be sworn in next week.
The jury have not yet been sworn in.

[TahlilGaran] Dictionary of Contemporary English ▲

swear in
swear (someone) in
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.

[TahlilGaran] English Idioms Dictionary ▲

swear in
to have a person promise to do his duty as a member of an organization or in a formal position.
The new mayor of the city was sworn in at a large ceremony last evening.

[TahlilGaran] English Idioms Dictionary ▲

swear in
v. To have a person swear or promise to do his duty as a member or an officer of an organization, government department, or similar group.
■ "Swear into" is used when the name of the group is given.
Mary and Ann will be sworn into the club tonight.
Fred was sworn in as class president.
Many new men were sworn into the army last month.
At the inauguration, the Chief Justice of the Supreme Court swore in the new President.

[TahlilGaran] English Idioms Dictionary ▲

swear someone in
swear (someone) in
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.

[TahlilGaran] English Idioms Dictionary ▲

swear someone in
to have a person promise to do his duty as a member of an organization or in a formal position.
The new mayor of the city was sworn in at a large ceremony last evening.

[TahlilGaran] English Idioms Dictionary ▲