From Longman Dictionary of Contemporary Englishswear somebody ↔ in phrasal verbPROMISEif 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.Grammar Swear in is usually passive. → swear→ See Verb table
Examples from the Corpus
swear in• The case had taken two weeks at the Old Bailey, the first devoted to legal argument before the jury was sworn.• Kelly swore Kennelly in, and he also swore under his breath.• He explained as House met today, better not to swear me in as First Lord of the Treasury until it rose.• Tamayo swears he comes in at 8 a. m. every day just so he can work out.• After they had used swear words once in class, he argued, they would never use them again.• Those squirrelly lizards and the prevalence of mosquitoes were why she swore off camping in Hawaii.• Joey Cohen was a kid who took absolute pleasure in swearing and in proving his toughness to himself.• He bought four ponies, all of which Alejandro swore played in the final of last year's Open. 