Breadcrumb Home > Thesaurus > C Synonyms of conclusive Find synonyms for: Adjective 1. conclusive (vs. inconclusive), definitive, determinate, decisive usage: forming an end or termination; especially putting an end to doubt or question; "conclusive proof"; "the evidence is conclusive" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of conclusive (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: spurious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language