conjecture
n//kənˈd͡ʒek.t͡ʃə(ɹ)//förmodan, hypotes, förmoda
(formal) A statement or an idea which is unproven, but is thought to be true; a guess.
(mathematics, philology) A statement likely to be true based on available evidence, but which has not been formally proven.
(formal) A supposition based upon incomplete evidence; a hypothesis.
(formal, intransitive) To guess; to venture an unproven idea.
(transitive) To infer on slight evidence; to guess at.