1) Asceticism 1) Protestantism 2) Rigid austerity 
• (n.) The doctrines, notions, or practice of Puritans.
a religious reform movement in the late 16th and 17th centuries that sought to `purify` the Church of England of remnants of the Roman Catholic ... [43 related articles]
Pu'ri·tan·ism noun The doctrines, notions, or practice of Puritans. 
[n] - the beliefs and practices characteristic of Puritans (most of whom were Calvinists who wished to purify the Church of England of its Catholic aspects) 2. [n] - strictness and austerity in conduct and religion
noun strictness and austerity in conduct and religion
A term referring, in general, to a purification of existing religious forms and practices. More specifically, Puritanism refers to that group of earnest English Protestants who broke with the Roman system more completely in objection to traditional ceremonies formalities and organizations. This moral earnestness at reformation led to the emphasis ....
the principles and practices of the Puritans. · (sometimes l.c.) extreme strictness in moral or religious matters, often to excess; rigid austerity.