Vocabulary
成人

成せい人じん

seijin
Common N3 noun

Translations

1. adult
2. grown-up

Notes

成人 refers to someone who has reached adulthood, typically recognized at the age of 20 in Japan. It is often associated with the coming-of-age ceremony, known as 成人式 (seijinshiki), which is a significant cultural event.

Examples

彼かれは成せい人じんになりました。

Kare wa seijin ni narimashita.

He has become an adult.

成せい人じん式は来らい月げつです。

Seijinshiki wa raigetsu desu.

The coming-of-age ceremony is next month.

日本にほんでは20はたちで成せい人じんと見み做なされます。

Nihon de wa hatachi de seijin to minasaremasu.

In Japan, you are considered an adult at 20 years old.