anathemize
/ˌænəˈθɛmɪzaɪz/Definitions
1. verb
to condemn or excommunicate someone or something from a community or group, especially a religious one
“The church anathemized the heretic, cutting him off from the rest of the congregation.”
2. noun
the act of condemning or excommunicating someone or something from a community or group
“The anathemization of the heretic was a severe punishment.”