If you hypothesize that something will happen, you say that you think that thing will happen because of various facts you have considered.
例句
To explain this, they hypothesise that galaxies must contain a great deal of missing matter which cannot be detected...為了解釋這一點，他們假定各星系一定包含了大量無法探測到的不明物質。I have long hypothesized a connection between these factors.我一直以來就認為這些因素之間存在著某種關聯。
英英詞典釋義
Verb
1. to believe especially on uncertain or tentative grounds;
"Scientists supposed that large dinosaurs lived in swamps"