non-U
adjective UK old-fashioned uk/ˌnɒnˈjuː/ us/ˌnɑːnˈjuː/
（行为或说话方式）不合于上层阶级意愿的
Behaviour or ways of speaking that are non-U would not be considered acceptable by people of high social class.
Compare: U, u adjective (UPPER-CLASS)
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