moralistic, narrow, narrow-minded, niminy-piminy, of the old school, old-maidish (informal) overscrupulous, prim, proper, prudish, puritanical, strict, Victorian
broad-minded, earthy, immoral, loose, relaxed, uninhibited, unreserved
English Collins Dictionary - English synonyms & Thesaurus
strait-laced , straight-laced, straitlaced
If you describe someone as strait-laced, you disapprove of them because they have very strict views about what kind of behaviour is moral or acceptable. adj
He was criticised for being boring, strait-laced and narrow-minded...
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