conjecturalist

Etymology

From conjectural + -ist.

conjecturalist means One who forms conjectures. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

noun

One who forms conjectures.“Listen to the plain practical advice, with which he, who was such a conjecturalist in biblical matters, addressed the projector.”
A believer in conjecturalism, I assume-->