"hypothesises" in the noun sense
1. hypothesis
a proposal intended to explain certain facts or observations
2. hypothesis, possibility, theory
a tentative insight into 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
a message expressing an opinion based on incomplete evidence
"hypothesises" in the verb sense
1. speculate, theorize, theorise, conjecture, hypothesize, hypothesise, hypothecate, suppose
to believe especially on uncertain or tentative grounds
"Scientists supposed that large dinosaurs lived in swamps"
Source: WordNet® (An amazing lexical database of English)
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