Someone who is grown-up is physically and mentally mature and no longer depends on their parents or another adult.
I seem to have everything anyone could want – a good husband, a lovely home, grown-up children who're doing well.
我似乎拥有人们想要的一切—好丈夫,温馨的家和已长大成人、有出息的子女。
If you say that someone is grown-up, you mean that they behave in an adult way, often when they are in fact still a child.
She's very grown-up.
她成熟得像个大人。
Grown-up things seem suitable for or typical of adults.
Her songs tackle grown-up subjects.
她的歌曲以成人题材为主题。
grown-ups
A grown-up is an adult.
adult
Jan was almost a grown-up.
简几乎是个大人了。