Meaning of “grow into sb/sth” - Learner’s Dictionary

grow into sb/sth

phrasal verb with grow us uk /ɡrəʊ/ verb past tense grew, past participle grown

to develop into a particular type of person or thing:

In the last few years, he's grown into a fine, responsible young man.

(Definition of “grow into sb/sth” from the Cambridge Learner’s Dictionary © Cambridge University Press)