hypothesize vs theorize

hypothesize and theorize both are verbs.

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

As verbs, hypothesize and theorize are synonyms defined as:

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

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

hypothesize (verb)	theorize (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