Main entry: supererogatory, superfluous, supernumerary, surplus, excess, extra, spare, redundant
Definition: more than is needed, desired, or required
Usage: trying to lose excess weight; 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