The term "growing into" signifies the gradual development or maturation of a person or thing into a better version of itself. There are several synonyms for this word, each with its own connotations. One such synonym is "evolving," which suggests a natural progression towards growth and development. Another synonym is "maturing," which implies a sense of refinement and completeness. "Blossoming" is yet another synonym which brings to mind the image of a flower slowly but surely coming into its own. Ultimately, the choice of synonym depends on the context in which it is used and the desired tone or mood.