/ Thesaurus / S Synonyms of swear in Find synonyms for: Verb1. swear in, inaugurate, kick offusage: administer on oath to; "The speaker of the House swore in the new President"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language