1) Excommunicate 2) To excommunicate 
• (v. t.) To deprive of the character, privileges, and authority of a church. • (v. t.) To expel, or cause to separate, from a church; to excommunicate.
unchurch 1. To deprive (a congregation, sect, or building) of the status of a church. 2. To expel, or cause to separate, from a church; to excommunicate.
to expel (a person) from a church; excommunicate. · to deprive of the character and rights of a church.