/ Thesaurus / 1 Synonyms of 1st Find synonyms for: Adjective1. first, 1st, ordinal (vs. cardinal)usage: indicating the beginning unit in a seriesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language