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English definition of “fact”

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fact

noun [C or U] uk   /fækt/ us  
A2 something that is known to have happened or to exist, especially something for which proof exists, or about which there is information: No decision will be made until we know all the facts. I don't know all the facts about the case. I'm not angry that you took my car - it's just the fact that you didn't ask me first. He knew for a fact that Natalie was lying. It's sometimes hard to separate fact from fiction.as a matter of fact B1 ( also in (actual) fact) used to add emphasis to what you are saying, or to show that it is the opposite of or different from what went before: I don't work. In fact, I've never had a job. "Have you always lived here?" "As a matter of fact (= the truth is) I've only lived here for the last three years."a fact of life something unpleasant that cannot be avoided: Going bald is just a fact of life.facts and figures exact detailed information: We are getting some facts and figures together and we will then have a full board meeting.the facts of life details about sexual activity and the way that babies are born
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(Definition of fact from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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