hypothesise vs hypothesize

hypothesise and hypothesize both are verbs.

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

As verbs, hypothesise and hypothesize are synonyms defined as:

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

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

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