/ Thesaurus / C Synonyms of clxxx Find synonyms for: Adjective1. one hundred eighty, 180, clxxx, cardinal (vs. ordinal)usage: being ten more than one hundred seventyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language