What is another word for "supposition"?

Roget's Thesaurus (1911) lists these synonyms for "supposition": adage, admitted, analogy, aphorism, aphoristic, apophthegm, apothegm, approximation, association, assumed, assumption, axiom, axiomatic, bare, belief, blue, byword, common, commonplace, conceit, conclusion, condition, conjecture, dark, data, dictum, divination, estimate, fact, faith, first, formula, gnomic, golden, guess, guesswork, hint, hypothesis, idea, imagination.