pu ‧ ri ‧ tan ‧ i ‧ cal /ˌpjʊərəˈtænɪk ə l◂, ˌpjʊərɪˈtænɪk ə l◂ $ ˌpjʊr-/ BrE AmE adjective
very strict about moral matters, especially sex – used in order to show disapproval:
a puritanical father who wouldn’t let his children watch television
The atmosphere at the school was oppressively puritanical.