/ Thesaurus / R Synonyms of ratiocinative Find synonyms for: Adjective1. ratiocinative, logical (vs. illogical)usage: based on exact thinking; "one's ratiocinative powers"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language