/ Thesaurus / I Synonyms of ix Find synonyms for: Noun1. nine, 9, IX, niner, Nina from Carolina, ennead, digit, figureusage: the cardinal number that is the sum of eight and oneAdjective1. nine, 9, ix, cardinal (vs. ordinal)usage: denoting a quantity consisting of one more than eight and one less than tenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language