verb

• (transitive) To officially exclude someone from membership of a church or religious community.
  "“Perhaps it is because I have been excommunicated. It’s absurd, but I feel like the Jackdaw of Rheims.” ¶ She winced and bowed her head. Each time that he spoke flippantly of the Church he caused her pain."
• (transitive, historical or figurative) To exclude from any other group; to banish.
  "Samois includes celebate ^([sic]), heterosexual and bisexual women as well as lesbians, and I feel very strongly that this is the wisest choice. Our community is so fragile that we can't afford to fragment it by excommunicating non-lesbian women."

adj

• (archaic) Excommunicated.
  "[…]the iewes had conſpyred allredy that yff eny man did confeſſe that he was Chriſt / he ſhulde be excommunicat out of the Sinagoge."