Supposition1. (n.) That which is supposed; hypothesis; conjecture; surmise; opinion or belief without sufficient evidence.
2. (n.) The act of supposing, laying down, imagining, or considering as true or existing, what is known not to be true, or what is not proved.
Thesaurus Entries
allegory, allusion, apprehension, apriorism, arcane meaning, assumption, axiom, belief, coloration, conceit, concept, conception, conjecture, connotation, fancy, guesswork, hint, hypothesis, idea, image, imago, implication, implied meaning, import, impression, inference, innuendo, intellectual object, intimation, ironic suggestion, meaning, memory-trace, mental image, mental impression, metaphorical sense, notion, nuance, observation, occult meaning, opinion, overtone, perception, perhaps, posit, postulate, postulation, postulatum, premise, presumption, presupposal, presupposition, proposal, proposition, recept, reflection, representation, sentiment, set of postulates, speculation, subsense, subsidiary sense, suggestion, supposal, suppose, supposing, surmise, symbolism, theory, thesis, thought, tinge, touch, undercurrent, undermeaning, undertone, working hypothesis