grown-up
nounUK /ˈɡrəʊn.ʌp/
US /ˈɡroʊn.ʌp/
A grown-up is a person who is an adult and not a child anymore.
The little girl held her grown-up's hand while crossing the street.
SYNONYMS
OTHER MEANINGS
2. Behaving in a serious, mature way.
She stayed calm and grown-up during the emergency.
3. Suitable for or intended for adults.
This is a grown-up movie, not for kids.
4. Having finished growing; fully developed.
The puppy is now a grown-up dog.