/ Thesaurus / S Synonyms of sesquipedalia Find synonyms for: Noun1. sesquipedalian, sesquipedalia, polysyllable, polysyllabic wordusage: a very long word (a foot and a half long)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language