surmise

nouns

a message expressing an opinion based on incomplete evidence
conjecture, guess, hypothesis, speculation, supposition, surmisal, surmise

verbs

infer from incomplete evidence
surmise
is derived from
surmisal
is a type of (narrower)
reason by deduction; establish by deduction
deduce, deduct, derive, infer
imagine to be the case or true or probable
"I suspect he is a fugitive"; "I surmised that the butler did it"
surmise, suspect