Definition of puritanical adjective from the Oxford Advanced American Dictionary

 

puritanical

 adjective
adjective
NAmE//ˌpyʊrəˈtænɪkl//
 
(also puritan)(usually disapproving)
 
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having very strict moral attitudes Their parents had a puritanical streak and didn't approve of dancing.
See the Oxford Advanced Learner's Dictionary entry: puritanical