n. anything that is not essential; "they discarded all their inessentials"

adj. not absolutely necessary

adj. not basic or fundamental

adj. suitable to be expended

adj. not essential; "the ballet struck me as extraneous and somewhat out of keeping with the rest of the play"

adj. not important; "a relatively unimportant feature of the system"; "the question seems unimportant"

adj. unnecessary and unwarranted; "a strikers' tent camp...was burned with needless loss of life"

adj. more 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"

adj. unnecessary and unwarranted; "a strikers' tent camp...was burned with needless loss of life"

adj. kept in reserve especially for emergency use; "a reserve supply of food"; "a spare tire"; "spare parts"

n. anything that is necessary but lacking; "he had sufficient means to meet his simple needs"; "I tried to supply his wants"

adj. absolutely essential

adj. basic and fundamental; "the essential feature"