Unperson definitions
A nonperson.
noun
A person who is completely ignored, as if he or she does not exist; specif., such a person officially ignored by his or her own government.
noun
A human who has been stripped of rights, identity or humanity.
With his identity stolen he became an unperson unable to prove his existence to the government.
noun
Origin of unperson
un- +"Ž person. From the synthetic language "newspeak" in George Orwell's novel Nineteen Eighty-Four (1949), where it refers to a person who has not only been executed but whose entire history has been erased.