IPA: /ˌpjʊəˈrɪtənɪkəl/
KK: /ˌpjʊrɪˈtænɪkəl/
Relating to strict moral or religious principles, often with a focus on avoiding pleasure or indulgence.
Her puritanical views on social behavior made her unpopular at parties.
Puritanical → It is formed from "Puritan" (from Middle English *puritane*, meaning a member of a Protestant group advocating for strict religious discipline) and the suffix "-ical" (meaning pertaining to). The word "puritanical" describes a strict adherence to moral or religious principles, often with a connotation of excessive rigidity.
Think of the strict members of the Puritan group, and remember that 'puritanical' means relating to their severe moral standards.