1.
adult, grown-up
A person who has reached maturity.
大人になる。
To become an adult.
大人2人と子供1人
Two adults and one child.
大人っぽい
Mature, adult-like.
大人の切符は千円です。
An adult ticket is 1,000 yen.
早く大人になりたいと思っていたが、今は子供の時に戻りたい。
I used to want to grow up quickly, but now I want to go back to being a child.
大人 means adult and is used both literally (a grown person) and figuratively (mature, sensible behavior). The reading おとな is irregular — the kanji would normally read だいじん or たいじん.
USAGE:
大人 often implies maturity and composure beyond just age. Saying 大人だね can mean "that's mature of you" as a compliment.
COMMON EXPRESSIONS:
- 大人になる: to grow up, to become an adult
- 大人っぽい: mature, adult-like
- 大人料金: adult price/fare
- 大人しい: gentle, well-behaved (a separate word, not directly related)
CONTRAST:
- 大人: adult (general)
- 子供: child
- 成人: adult in the legal sense (used in 成人式, coming-of-age ceremony)
- 若者: young person
- お年寄り: elderly person