1. (n.) An opinion, guess, or judgment, often formed on presumptive evidence; a surmise\; a suspicion.

2. (v. t.) To arrive at by conjecture; to infer on slight evidence; to surmise; to guess; to form, at random, opinions concerning.

3. (v. i.) To make conjectures; to surmise; to guess; to infer; to form an opinion; to imagine.

assume assumption axiom believe blind guess bold conjecture conceive conclude deem estimate expect fancy feel gather give a guess glean guess guesswork hazard a conjecture hunch hypothesis imagine infer inference judge perhaps postulate postulation postulatum premise presume presumption presupposal presupposition pretend proposition risk assuming rough guess set of postulates shot speculation stab supposal suppose supposing supposition surmise suspect take for granted tentatively suggest thesis think unverified supposition venture a guess wild guess working hypothesis