un·fore·see·able /ˌən-fōr-'sē-ə-bəl/ adj: not capable of being reasonably anticipated or expected: such that a person of ordinary prudence would not expect to occur or exist under the circumstances
an unforeseeable misuse
an unforeseeable injury
un·fore·see·abil·i·ty /-ˌsē-ə-'bi-lə-tē/ n
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.