adj. without cause; "a gratuitous insult"

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

adj. costing nothing; "complimentary tickets"; "free admission"

adj. not basic or fundamental

adj. occurring without motivation or provocation; "motiveless malignity"; "unprovoked and dastardly attack"- F.D.Roosevelt

adj. beyond normal limits; "excessive charges"; "a book of inordinate length"; "his dress stops just short of undue elegance"; "unreasonable demands"

adj. not consistent with or using reason; "irrational fears"; "irrational animals"

adj. lacking justification or authorization; "unreasonable searches and seizures"; "desire for undue private profit"; "unwarranted limitations of personal freedom"

adj. suitable to be expended

adj. lacking import; "a pointless remark"; "a life essentially purposeless"; "senseless violence"

adj. not deserved or earned; "has an undeserved reputation as a coward"

adj. not absolutely necessary

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

adj. free of charge; "if they deposit these shares in the scheme they will get further buckshee shares on a one-for-one basis"- Economist

adj. owed as a debt; "outstanding bills"; "the amount still owed"; "undischarged debts"

adj. complimentary; without payment of rent; "with the job came a rent-free apartment"

adj. not paying a salary; "an uncompensated federal post"

adj. absolutely essential