expendable (adj.)

• consumable
• dispensable
• disposable
• excess
• gratuitous
• inessential
• insignificant
• needless
• nonessential
• pleonastic
• prolix
• redundant
• replaceable
• spare
• spendable
• substitutable
• supererogatory
• superfluous
• tautologic
• throwaway
• uncalled-for
• unessential
• unimportant
• unnecessary
• unneeded
• verbose