/ Thesaurus / P Synonyms of premiss Find synonyms for: Noun1. premise, premiss, assumption, postulate, positusage: a statement that is assumed to be true and from which a conclusion can be drawn; "on the assumption that he has been injured we can infer that he will not to play"Verb1. premise, premiss, presuppose, supposeusage: take something as preexisting and givenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language