strait·laced /ˌstreɪtˈleɪst◂/ adjectiveadj OLD/NOT YOUNGhaving strict old-fashioned ideas about moral behaviour 〔道德方面〕一本正经的;守旧的,古板的 straitlaced Victorian society 维多利亚时代守旧的社会
straitlaced• My aunt's very straitlaced - she'd be shocked if you mentioned sex.