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English definition of “non-U”

non-U

adjective     /ˌnɒnˈjuː/ US  /ˌnɑːn-/ UK old-fashioned
Behaviour or ways of speaking that are non-U would not be considered acceptable by people of high social class . → Compare U, u adjectiveManners and levels of formalityPolite and respectful
(Definition of non-U adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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