grow up
phrasal verbgrow up
- (of a person) to develop into an adult
- She grew up in Boston (= lived there as a child).
- Their children have all grown up and left home now.
- grow up to do something He grew up to become a famous pianist.
- used to tell somebody to stop behaving in a silly way
- Why don't you grow up?
- It's time you grew up.
- to develop gradually
- A closeness grew up between the two girls.