The word "unperson" refers to someone who has been ignored, erased, or excluded from society in some way. Some synonyms for "unperson" include "nonentity," "outcast," "pariah," "social outcast," "recluse," "hermit," and "ghost." Each of these words represents a different aspect of being an "unperson." A nonentity is someone who is considered insignificant or unimportant, while an "outcast" is someone who has been cast out of society for some reason. A pariah is someone who is hated or rejected by others, while a recluse or hermit chooses to isolate themselves from society. Finally, a ghost represents someone who is believed to have died or never existed in the first place.