B1 to form, give, or have as an opinion, or to decide about something or someone, especially after thinking carefully: So far, he seems to be handling the job well, but it's really too soon to judge. [+ question word] It's difficult to judge whether the new system really is an improvement. The meeting was judged (to have been) a success. You shouldn't judge by/on appearances alone. I'm hopeless at judging distance(s) (= guessing how far it is between places).Analysing and evaluatingAssessing and estimating value C2 to express a bad opinion of someone's behaviour, often because you think you are better than them: You have no right to judge other people because of what they look like or what they believe. C1 to officially decide who will be the winner of a competition: I've been asked to judge the fancy-dress competition.Decisions and decidingRefereeing and judging in sport judging by/from (also to judge by/from) B2 used to express the reasons why you have a particular opinion: Judging by what he said, I think it's very unlikely that he'll be able to support your application.Analysing and evaluatingAssessing and estimating value