/ Thesaurus / S Synonyms of swelled head Find synonyms for: Noun1. egotism, self-importance, swelled head, conceit, conceitedness, vanityusage: an exaggerated opinion of your own importanceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language