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English definition of “guess”

guess

verb     /ɡes/
SAY WITHOUT KNOWING [I, T] A2 to give an answer or opinion about something without having all the facts: Can you guess how old he is? I would say he probably works in the media, but I'm just guessing.Guesses and assumptions
SAY CORRECTLY WITHOUT KNOWING [I, T] A2 to give a correct answer without having all the facts: "You've got a promotion!" "Yes, how did you guess?" [+ (that)] I'd never have guessed that you two were related.Guesses and assumptions
I guess B1 used when you think that something is probably true or likely: I've known her for about 12 years, I guess.Guesses and assumptionsGuessing, supposing and suspecting
I guess so/not B2 used when you agree/disagree but are not completely certain about somethingAccepting and agreeing reluctantlyAccepting and agreeingApproving and approval
Guess what? A2 something you say when you have some surprising news for someone: Guess what? I'm pregnant.Surprising and shockingMaking people sad, shocked and upset
(Definition of guess verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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