/ Thesaurus / X Synonyms of xxxviii Find synonyms for: Adjective1. thirty-eight, 38, xxxviii, cardinal (vs. ordinal)usage: being eight more than thirtyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language