/ Thesaurus / S Synonyms of seventy three Find synonyms for: Adjective1. seventy-three, 73, lxxiii, cardinal (vs. ordinal)usage: being three more than seventyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language