Idioms (saying) something large and successful often begins in a very small wayPhrasal Verbs
- 1 (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. related noun grown-up2 See related entries: Youth
- 2 used to tell somebody to stop behaving in a silly way Why don't you grow up? It's time you grew up.
- 3to develop gradually A closeness grew up between the two girls.