fact
noun
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a piece of information about circumstances that exist or events that have occurred“first you must collect all the facts of the case”
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a concept whose truth can be proved“scientific hypotheses are not facts”
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a statement or assertion of verified information about something that is the case or has happened“You supported your argument with an impressive array of facts.”
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an event known to have happened or something known to have existed“your fears have no basis in fact”