Attainder

In the Bajoran religion, Attained refers to the expulsion of a Bajoran from the faith. It is similar to the ancient human practice of excommunication. A Bajoran who has been Attained was forbidden to enter any Bajoran temple, read any prophecies, look into an Orb, pray with other Bajorans, or even to wear their earring.

Examples
In 2376, the Vedek Assembly had Captain Kira Neyers Attained as she had defied them by uploading a book of prophecies on to the Bajoran comnet. This book, which had been recovered from B'Hala was controversial because it described the Prophets as teachers rather than Gods, and the Vedek Assembly wished the book suppressed. Eventually former Kai Opaka Sulan convinced the Vedeks to welcome Kira back into the faith. (Star Trek: Deep Space Nine novels: Avatar, Books One and Two and Unity).