The word "excommunicate" is correct and usable in written English.
It is usually used with the meaning of "exclude or ostracize (someone) from a society or group". For example: "The church excommunicated him for his refusal to follow their rules."
This year's bishops' council voted to excommunicate Metropolitan Filaret of Kiev, who has set up a schismatic church in Ukraine one of several that now battle for that nation's souls.
He threatened to excommunicate Geraldine Ferraro, a vice-presidential nominee, and Mario Cuomo, a former governor, for their pro-choice stance in the abortion debate.
Polish bishops famously described the practice as "refined abortion" and have threatened to excommunicate MPs who vote for anything other than to ban it.Yet more than two thirds of Poles oppose any ban on IVF treatment.
With Irish bishops urging the flock to protect the country's "pro-life" tradition, and threatening to excommunicate erring politicians, Mr Kenny has retorted in a memorable sound-bite that the only book he follows, as a political leader, is the constitution.That might sound like a pledge to separate church and state once and for all.
The government promises Wales a wishy-washy assembly, without legislative powers, and threatens to excommunicate any Labour MP who dares question it.
It has no power to send anybody to prison but it can be used to defrock a priest or excommunicate a lay-person.
The letters reached Gregory during the customary Lenten synod (February 14 20 , 1076, and the outraged pope reacted immediately, using a prayer to Peter to depose and excommunicate Henry.
In 1223 he settled the Barons' War in England that followed the death of King John by threatening to excommunicate all who supported Prince Louis (later King Louis VIII) of France over John's nine-year-old son and papal vassal, King Henry III.
Political and ecclesiastical rivalries as well as theology played a role in the decision of Chalcedon to depose and excommunicate the patriarch of Alexandria, Dioscorus (d. 454).
In the Anglican Church the bishops have the right to excommunicate, but this right is almost never exercised.
The Christian ruler, then, being himself a priest, could reform the church in externals, as the church might excommunicate him in spirituals.
