unmarketable

adjective | \ ˌən-ˈmär-kə-tə-bəl \ | un·mar·ket·able

1. : not marketable; especially : being or relating to title that a reasonably prudent person would not accept in the ordinary course of business or that is reasonably likely to be the subject of litigation : being or relating to title that a reasonably prudent person would not accept in the ordinary course of business or that is reasonably likely to be the subject of litigation