- guess [n] belief, speculation assumption, ballpark figure*, conclusion, conjecture, deduction, divination, estimate, fancy, feeling, guesstimate*, guesswork, hunch*, hypothesis, induction, inference, judgment, notion, opinion, postulate, postulation, prediction, presumption, presupposition, reckoning, shot*, shot in the dark*, sneaking suspicion*, stab*, supposal, supposition, surmisal, surmise, suspicion, theory, thesis, view; concept 689 —Ant. calculation, measurement guess [v] try to figure out; imagine believe, calculate, chance, conjecture, dare say, deduce, deem, divine, estimate, fancy*, fathom, go out on a limb*, guesstimate*, happen upon*, hazard*, hypothesize, infer, judge, jump to a conclusion*, lump it*, opine, penetrate, pick, postulate, predicate, predict, presume, pretend, reason, reckon, select, size up*, solve, speculate, suggest, suppose, surmise, survey, suspect, take a shot at*, take a stab at*, theorize, think, think likely, venture, work out*; concept 28 —Ant. calculate, measure
New thesaurus. 2014.