unperson
/ˈʌnˌpərˈsɒn/Definitions
1. noun
A person whose existence or identity is denied or suppressed, often by an authoritarian government or institution.
“The dissident was declared an unperson by the regime, and all mention of him was erased from official records.”
2. verb
To declare someone an unperson, typically by suppressing information about them or denying their existence.
“The government unpersoned the opposition leader, silencing him and his supporters.”