Open English Wordnet
Nouns
Adjectives
(s)excess, extra, redundant, spare, supererogatory, superfluous, supernumerary, surplusmore than is needed, desired, or required“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”
(s)extra, additionalfurther or added“called for additional troops”, “need extra help”, “an extra pair of shoes”