surmisal vs conjecture

surmisal and conjecture both are nouns.

Word	Noun	Adjective	Verb	Adverb
surmisal	Yes	No	No	No
conjecture	Yes	No	Yes	No

As nouns, surmisal and conjecture are synonyms defined as:

surmisal and conjecture: a message expressing an opinion based on incomplete evidence

Other synonyms of surmisal include guess, hypothesis, speculation, supposition, surmise.

surmisal (noun)	conjecture (noun)
a message expressing an opinion based on incomplete evidence	a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)
	reasoning that involves the formation of conclusions from incomplete evidence
	a message expressing an opinion based on incomplete evidence

surmisal (verb)	conjecture (verb)
	to believe especially on uncertain or tentative grounds