n.a person regarded as nonexistent and having no rights; a person whose existence is systematically ignored (especially for ideological or political reasons)
"George Orwell predicted that political dissidents would be treated as unpersons"
同义词：nonperson
英汉双解大词典
unperson/ˈʌnpɜːsən/
1.
N（名词）
a person whose existence is officially denied or ignored 被忽视的人