老成する · noun or participle which takes 'suru'
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 老成する | 老成しない |
| Polite | 老成します | 老成しません |
| Past polite | 老成しました | 老成しませんでした |
| Past | 老成した | 老成しなかった |
| Te-form | 老成して | 老成しないで |
| Desire | 老成したい | 老成したくない |
| Potential | 老成できる | 老成できない |
| Passive | 老成される | 老成されない |
| Causative | 老成させる | 老成させない |
| Causative passive | 老成させられる | 老成させられない |
| Volitional | 老成しよう | |
| Polite volitional | 老成しましょう | |
| Imperative | 老成しろ | 老成するな |
| Conditional | 老成すれば | 老成しなければ |
| Tara conditional | 老成したら | 老成しなかったら |
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.
He has a mature way of thinking.
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.
That child is precocious and makes grown-up remarks.