Synonyms for Amnesiac:

adj.

all (adjective)
amnesic.
forgetful (adjective)
amnesic.

n.

depressive, the critical list, remember, agoraphobe, asthmatic, oblivious, consumptive, anorexic, bed-blocker, diabetic, case. amnesiac (noun)
forgetful, unmindful, mindless, amnesic.
person (noun)
amnesic.

Other synonyms:

consumptive, diabetic, the critical list, agoraphobe, asthmatic, bed-blocker, anorexic. oblivious, depressive. case. Other relevant words:
consumptive, diabetic, bed-blocker, oblivious, case, agoraphobe, anorexic.