(a.) More than is wanted or is sufficient; unnecessary; excessive; as, a superfluous price\.

accessory accidental additional adscititious adventitious aimless appurtenant ascititious auxiliary casual circumstantial collateral contingent de trop dispensable excess excessive expendable expletive extra feckless fortuitous gratuitous impotent in excess incidental ineffective ineffectual inessential left leftover meaningless needless net no go nonessential odd of no use outstanding over pleonastic pointless prolix purposeless redundant remaining remanent secondary spare subsidiary superabundant superadded supererogatory supernumerary supervenient supplemental supplementary surplus surviving tautologic tautologous to spare unasked unavailing uncalled-for unconsumed unessential unnecessary unneeded unused unwanted useless verbose