Open English Wordnet
Nouns
Verbs
(v)spare, give up, part with, dispense withgive up what is not strictly needed“he asked if they could spare one of their horses to speed his journey”
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)plain, bare, spare, unembellished, unornamentedlacking embellishment or ornamentation“a plain hair style”, “unembellished white walls”, “functional architecture featuring stark unornamented concrete”