To grow out of something is to become too old or too big for it. Grow out of the shoes, grow out of the habit.
It covers clothes and behaviour alike, and both mean a change that came with time rather than effort. A third sense is to develop from, since one project can grow out of another.
1phrasegrow out ofTo become too old or too big for something.
“Children grow out of a coat in a single winter.”
grow out of is a phrase.
Practised in Phrasal Verbs