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English definition of “naive”

naive

adjective uk (also naïve)   /naɪˈiːv/ mainly disapproving us  
C1 too willing to believe that someone is telling the truth, that people's intentions in general are good, or that life is simple and fair. People are often naive because they are young and/or have not had much experience of life: She was very naive to believe that he'd stay with her. They make the naive assumption that because it's popular it must be good. It was a little naive of you to think that they would listen to your suggestions.
naively
adverb uk (also naïvely)   /-li/ us  
I, perhaps naively, believed he was telling the truth.
(Definition of naive from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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