1.
If you grow out of a type of behaviour or an interest, you stop behaving in that way or having that interest, as you develop or change.
Most children who stammer grow out of it.
= outgrow
PHRASAL VERB : V P P n
2.
When a child grows out of an item of clothing, they become so tall or big that it no longer fits them properly.
You’ve grown out of your shoes again.
= outgrow
PHRASAL VERB : V P P n