Adjective
acatholic (not comparable)
not Catholic
In the time of Counter-Reformation the term Acatholic was used by zealous members of the Catholic Church to designate Protestants as well as Eastern Orthodox Christians. Source: Internet
During the Early Modern period, a special term "Acatholic" was widely used in the West to mark all those who were considered to hold heretical theological views and irregular ecclesiastical practices. Source: Internet