belike vs probably

belike and probably both are adverbs.

Word	Noun	Adjective	Verb	Adverb
belike	No	No	No	Yes
probably	No	No	No	Yes

As adverbs, belike and probably are synonyms defined as:

Other synonyms of belike include in all likelihood, in all probability, likely.

belike (adverb)	probably (adverb)
with considerable certainty; without much doubt	with considerable certainty; without much doubt
	easy to believe on the basis of available evidence