grown-upKK [ˈgroˌnʌp] ｜ /ˈgroʊˌnʌp/
GEPT 中級
B1noun
an adult, used especially when talking to or about children
The teacher told the children to always cross the road with a grown-up.
成人；大人
B2adjective
behaving in a mature way like an adult, or intended for adults
She sounded very grown-up when she explained why she wanted to save her red envelope money.
成熟的；成人的