What is another word for grow up?
Pronunciation: [ɡɹˈə͡ʊ ˈʌp] (IPA) 
When we talk about growing up, we usually refer to the process of maturing and becoming an adult. However, there are plenty of other phrases that we can use to describe this transition. For example, we might say that someone is "coming of age" or "developing into" who they are meant to be. Other synonyms for growing up might include "evolving," "advancing," "progressing," or "maturating." Whichever wording we choose, the underlying concept of reaching adulthood and taking on greater responsibility in life remains the same. As we grow up, we gain experience, confidence, and a sense of identity that shapes us into the person we become.
