grown-up

US /ˈɡroʊn.ʌp/

UK /ˈɡroʊn.ʌp/

1.

a fully developed person; an adult

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When you're a grown-up, you can make your own decisions.

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The children were told to act like grown-ups.

:

adult senior mature person

1.

fully developed; adult

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She has a very grown-up attitude for her age.

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This movie is too grown-up for young children.

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adult mature developed of age

:

on the up and up up up to come up with follow up keep up with look up to