Source : Webster's Revised Unabridged Dictionary (1913)

Unmerchantable \Un*mer"chant*a*ble\, a. (Com.)
   Not merchantable; not fit for market; being of a kind,
   quality, or quantity that is unsalable. --McElrath.

Source : WordNet®

unmerchantable
     adj : not fit for sale [syn: {unmarketable}, {unvendible}]