fully grown

This was a president who – maybe just that week – had fully grown into the largeness of his office.

It may be fifty or a hundred centuries since men, although they were fully grown up, still went on trying to learn.

Several attendants entered the building as he spoke; for to handle a large number of fully grown wild animals is no light matter.

This is altogether absent in the secure and accomplished movements of persons more fully grown.

But man is not fully grown as the acorn and the chestnut; never gets mature.

Take the best man and the greatest—all his faculties are not developed, fully grown and matured.