supposition
noun
[ ˌsʌpəˈzɪʃ(ə)n ]
• a belief held without proof or certain knowledge; an assumption or hypothesis.
• "they were working on the supposition that his death was murder"
Similar:
belief,
surmise,
idea,
notion,
suspicion,
conjecture,
speculation,
view,
inference,
theory,
thesis,
hypothesis,
postulation,
guess,
guesswork,
feeling,
hunch,
assumption,
presumption,
Origin:
late Middle English (as a term in scholastic logic): from Old French, or from late Latin suppositio(n- ) (translating Greek hupothesis ‘hypothesis’), from the verb supponere (see suppose).