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English definition of “jejune”

jejune

adjective uk   /dʒɪˈdʒuːn/ formal disapproving us  
very simple or childish: He made jejune generalizations about how all students were lazy and never did any work.Naive and trustingInexperienced (of people)
(Definition of jejune from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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