More than is needed, desired, or required. Synonyms: excess, redundant, spare, supererogatory, superfluous, supernumerary, surplus. "Found some extra change lying on the dresser" , "Yet another book on heraldry might be thought redundant" , "Skills made redundant by technological advance" , "Sleeping in the spare room" , "Supernumerary ornamentation" , "It was supererogatory of her to gloat" , "Delete superfluous (or unnecessary) words" , "Extra ribs as well as other supernumerary internal parts" , "Surplus cheese distributed to the needy"
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