Puritanism (Adjective) — Morally rigorous and strict. ex. "puritanic distaste for alcohol"
Puritanism (Noun) — (church service) the beliefs and practices characteristic of Puritans (most of whom were Calvinists who wished to purify the Church of England of its Catholic aspects).
Puritanism (Noun) — Strictness and austerity in conduct and religion.
Puritanism (Noun) — Someone who adheres to strict religious principles; someone opposed to sensual pleasures.
Puritanism (Noun) — A person excessively concerned about propriety and decorum.