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adult

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adjective adult pronunciation in British English /ˈædʌlt/ adult pronunciation in British English /əˈdʌlt/
  1. 1
    [only before noun] your adult life is the whole period of your life after you have become an adult

    She was born in Vietnam but has spent most of her adult life in the US.

    Synonyms and related words for this sense of adult
    1. a.
      involving people who are adults

      59% of the adult population

      a book enjoyed by young and adult readers

      Synonyms and related words for this sense of adult
  2. 3
    sensible or serious

    Can you try and be a little more adult about this?

    Synonyms and related words for this sense of adult
  3. 4
    [only before noun] completely grown

    an adult cat

    Synonyms and related words for this sense of adult

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