rigorism

/ˈrɪɡəˌrɪzəm/
noun
  1. Extreme strictness or severity in principles, rules, or conduct, especially in moral or religious matters.
    • His rigorism in following the diet made it impossible to eat at restaurants.
    • Some critics argue that the school's rigorism discourages creativity in students.
    • The religious leader's rigorism left no room for compromise on moral issues.
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