Breadcrumb Home > Thesaurus > S Synonyms of supposal Find synonyms for: Noun 1. assumption, supposition, supposal, hypothesis, possibility, theory usage: a hypothesis that is taken for granted; "any society is built upon certain assumptions" 2. supposition, supposal, conjecture usage: the cognitive process of supposing WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of supposal (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: quisling Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language