/ Thesaurus / T Synonyms of twenty three Find synonyms for: Noun1. twenty-three, 23, XXIII, large integerusage: the cardinal number that is the sum of twenty-two and oneAdjective1. twenty-three, 23, xxiii, cardinal (vs. ordinal)usage: being three more than twentyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language