grown-up

she's no longer a little girl; she's a grown-up now.

he started behaving like a responsible grown-up after college.

it's time you started thinking like a grown-up about your future.

the movie's themes are more suitable for a grown-up audience.

he's finally acting like a grown-up and taking on more responsibility.

she's a grown-up with a lot of life experience to share.

it's a grown-up conversation; let's keep our voices down.

he's trying to dress like a grown-up, but it doesn't quite work.

she's a grown-up and can make her own decisions.

the world looks different when you see it through a grown-up's eyes.

he needed to stop acting like a child and start thinking like a grown-up.