Jansenism

From Jansen +‎ -ism.

Jansenism (uncountable)

1. The Catholic doctrines of Cornelius Jansen and his followers, which emphasise original sin, divine grace and predestination; condemned as a heresy by Pope Innocent X in 1653
   • 2009, Diarmaid MacCulloch, A History of Christianity, Penguin, published 2010, page 798:

     From the mid-seventeenth century, therefore, disputes about Jansenism turned into a struggle for the soul of the French Church, now vigorously resurgent against a steadily more beleaguered Reformed Protestantism.

• Jansenist