excommunication
noun /ˌekskəˌmjuːnɪˈkeɪʃn/
/ˌekskəˌmjuːnɪˈkeɪʃn/
[uncountable, countable]- the act of punishing somebody by officially stating that they can no longer be a member of a Christian Church, especially the Roman Catholic Church
- They were threatened with excommunication.