surmise

Thought, imagination, or conjecture, which may be based upon feeble or scanty evidence; suspicion; guess.

surmises of jealousy or of envy

This opinion, however, is merely a surmise, which may or may not be the case.

Reflection; thought; posit.

My Thought, whoſe Murther yet is but fantaſticall, / Shakes ſo my ſingle ſtate of Man, / That Function is ſmother'd in ſurmiſe, / And nothing is, but what is not.

Then felt I like some watcher of the skies / When a new planet swims into his ken; / Or like stout Cortez when with eagle eyes / He star'd at the Pacific—and all his men / Look'd at each other with a wild surmise— / Silent, upon a peak in Darien.

To imagine or suspect; to conjecture; to posit with contestable premises.

If, as I surmise, you see the ladies this evening, you might mention my intended visit.