/ Thesaurus / 9 Synonyms of 9th Find synonyms for: Adjective1. ninth, 9th, ordinal (vs. cardinal)usage: coming next after the eighth and just before the tenth in positionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language