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English definition of “teenager”

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teenager

noun [C] uk   /ˈtiːnˌeɪ.dʒər/ us    /-dʒɚ/ ( informal teen)
A2 a young person between 13 and 19 years old: The magazine is aimed at teenagers and young adults.
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teenage
adjective [before noun] uk   /-eɪdʒ/ ( also teenaged,   /-eɪdʒd/   , informal teen) us  
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B1 a teenage nephew
(Definition of teenager from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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