theorize vs hypothesise

theorize and hypothesise both are verbs.

Word	Noun	Adjective	Verb	Adverb
theorize	No	No	Yes	No
hypothesise	No	No	Yes	No

As verbs, theorize and hypothesise are synonyms defined as:

theorize and hypothesise: to believe especially on uncertain or tentative grounds

Other synonyms of theorize include conjecture, hypothecate, hypothesize, speculate, suppose, theorise.

theorize (verb)	hypothesise (verb)
to believe especially on uncertain or tentative grounds	to believe especially on uncertain or tentative grounds
form or construct theories
construct a theory about