non-conformist

non-conformist (n.)also nonconformist, 1610s, originally one who adhered to Church of England doctrine but not its practice, from non- + conformist. After their ejection under the Act of Uniformity (1662) the name passed to the separate churches they joined or formed. In general use from 1670s as "one who does not participate in a practice or course of action." As an adjective from 1640s.