puritanical

/ˌpjʊrɪˈtænɪkəl/
adjective
  1. Having or showing very strict moral or religious beliefs, especially about pleasure and enjoyment.
    • The school's puritanical dress code required students to wear only plain, dark colors.
    • He had a puritanical attitude toward food, refusing to eat anything that tasted too rich or sweet.
    • Her puritanical parents wouldn't let her watch any movies that had romantic scenes.
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