amnesia
am·ne·sia
/æmˈniːʒə/ noun [ noncount ]
medical : a condition in which a person is unable to remember things because of brain injury, shock, or illness
am·ne·si·ac /æmˈniːʒiˌæk/ adj
an amnesiac patient
amnesiac noun , pl -acs [ count ]
a movie about a friendless amnesiac [=a person who has amnesia]
