theorise vs hypothesise

theorise and hypothesise both are verbs.

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

As verbs, theorise and hypothesise are synonyms defined as:

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

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

theorise (verb)	hypothesise (verb)
to believe especially on uncertain or tentative grounds	to believe especially on uncertain or tentative grounds