/ Thesaurus / 6 Synonyms of 60th Find synonyms for: Adjective1. sixtieth, 60th, ordinal (vs. cardinal)usage: the ordinal number of sixty in counting orderWordNet 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