not up to scratch

defective faulty flawed impaired incomplete inferior insufficient lacking scarce skimpy unsatisfactory weak

amiss bad damaged exiguous found wanting infrequent injured marred meager not cut out for not enough not make it outta gas rare scant scanty second fiddle second string short shy sketchy third-string unassembled unequal unfinished wanting

abundant adequate enough perfect strong sufficient

ample excessive faultless flawless satisfactory superfluous