Synonyms for hypothesis

Noun

1. hypothesis, proposal

usage: a proposal intended to explain certain facts or observations

2. hypothesis, possibility, theory, concept, conception, construct

usage: a tentative theory about the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena; "a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in chemical practices"

3. guess, conjecture, supposition, surmise, surmisal, speculation, hypothesis, opinion, view

usage: a message expressing an opinion based on incomplete evidence