/ Thesaurus / C Synonyms of conclusiveness Find synonyms for: Noun1. finality, conclusiveness, decisiveness, determinateness, definitenessusage: the quality of being final or definitely settled; "the finality of death"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language