/ Thesaurus / U Synonyms of unprovable Find synonyms for: Adjective1. unprovable, unobvious (vs. obvious)usage: not provable; "it was both unproved and unprovable"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: polyglot Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language