noun
age of majority; age of adulthood
Legal term referring to the age at which a person is recognized as an adult under the law. In Japan, it was lowered from 20 to 18 in 2022.
日本では2022年4月から成人年齢が18歳に引き下げられた。
In Japan, the age of majority was lowered to 18 from April 2022.
成
Once you reach the age of majority, you can enter into contracts without parental consent.