Synonyms of suppositions

1 Syllable

view, hunch, doubt

2 Syllables

notion, thesis, idea, guesswork, posit, theory, guessing

3 Syllables

suppose, surmise, assumption, presumption, opinion, suspicion, condition, premise, apriorism

4 Syllables

postulate, guesstimate, speculation, likelihood, conjecture, hypothesis, postulation

5 Syllables

presupposition