n. Anything done; an act; a deed; a feat.n. A real state of things, as distinguished from a statement or belief; that in the real world agreement or disagreement with which makes a proposition true or false; a real inherence of an attribute in a substance, corresponding to the relation between the predicate and the subject of a proposition.n. In law, an actual or alleged physical or mental event or existence, as distinguished from a legal effect or consequence: as in the phrases matter of fact, question of fact, the facts of the case, as distinguished from matter of law, question of law, the law of the case.