na-adjective, noun, noun or participle which takes 'suru', intransitive verb
Describes a person or their character as seasoned and wise through age and experience. Often used in formal or literary contexts.
彼は老成した考え方を持っている。
He has a mature way of thinking.
老成し
A seasoned person led the meeting.
na-adjective, noun, noun or participle which takes 'suru', intransitive verb
precocious; mature for one's age
Used for young people who show wisdom or composure beyond their years. Often carries a positive nuance.
あの子は老成していて、大人びた発言をする。
That child is precocious and makes grown-up remarks.