0 present participle of guess
1 to give an answer to a particular question when you do not have all the facts and so cannot be certain if you are correct:
[ + question word ] Guess when this was built.
[ + (that) ] I guessed (that) she was your sister.
[ + question word ] I bet you can't guess how old he is.
"You have a new job, don't you?" "Yes, how did you guess?"
[ + (that) ] I guess (that) things are pretty hard for you now.
I'm never going to guess the answer if you don't give me a clue.
She presents such a cheerful front that you'd never guess she's ill.
From her slow, deliberate speech I guessed she must be drunk.
No prizes for guessing where Daniel is.
She gave the present a quick squeeze and tried to guess what was inside.
In a city where speculation fuels the money markets, second guessing about corporate futures is commonplace throughout the business community.
As for whether democracy can reduce it, or will itself be eroded by it, we are left guessing.
In general, calls involving invited guessing seem to be pleasant surprises.