grown-up1
adjective /ˌɡrəʊn ˈʌp/
/ˌɡrəʊn ˈʌp/
- (of a person) mentally and physically an adult synonym adult
- What do you want to be when you're grown-up?
- She has a grown-up son.
- suitable for or typical of an adult
- The child was clearly puzzled at being addressed in such a grown-up way.