n. 25B6; verb
he guessed she was about 40 : ESTIMATE, hazard a guess, reckon, gauge, judge, calculate; hypothesize, postulate, predict, speculate, conjecture, surmise; informal guesstimate.
(informal) I guess I owe you an apology : SUPPOSE, think, imagine, expect, suspect, dare say; informal reckon, figure.
25B6; noun my guess was right : HYPOTHESIS, theory, prediction, postulation, conjecture, surmise, estimate, belief, opinion, reckoning, judgement, supposition, speculation, suspicion, impression, feeling; informal guesstimate.