/ Thesaurus / U Synonyms of unsurpassable Find synonyms for: Adjective1. unsurpassable, best (vs. worst)usage: not to be exceeded; "unsurpassable skill"; "unsurpassable standards of workmanship"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language