S: (v) speculate (talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion) "We were speculating whether the President had to resign after the scandal"
S: (v) guess, venture, pretend, hazard (put forward, of a guess, in spite of possible refutation) "I am guessing that the price of real estate will rise again"; "I cannot pretend to say that you are wrong"
S: (v) suppose, say (express a supposition) "Let us say that he did not tell the truth"; "Let's say you had a lot of money--what would you do?"
S: (v) think, opine, suppose, imagine, reckon, guess (expect, believe, or suppose) "I imagine she earned a lot of money with her new novel"; "I thought to find her in a bad state"; "he didn't think to find her in the kitchen"; "I guess she is angry at me for standing her up"