excommunicate (v.) Look up excommunicate at Dictionary.com
early 15c., from Late Latin excommunicatus, past participle of excommunicare "put out of the community," in Church Latin "to expel from communion," from ex "out" (see ex-) + communicare "to share, communicate," related to communis "common" (see common (adj.)). Related: Excommunicated; excommunicating.