Translation guide
The concept of maturity in Japanese can be expressed through words describing full development, ripeness, mental/emotional adulthood, and financial due dates. The most common translations depend heavily on context: physical/biological maturity vs. psychological/social maturity vs. financial maturity.
Describing something that has reached its full natural development, such as a fruit, plant, animal, or human body.
General term for maturity in the sense of full development or ripeness. Used for fruits, organisms, and abstract concepts like a mature society.
This fruit hasn't matured yet.
He is mature both physically and mentally.
Verb meaning 'to ripen' or 'to mature', often used for fruit, grain, or skills. Intransitive.
The persimmons ripened and became sweet.
Full ripeness, often used for fruit that is perfectly ripe.
A sauce made with fully ripe tomatoes.
Describing a person who behaves responsibly, thinks like an adult, or has emotional stability.
Literally 'adult', but often used to mean mature in behavior or attitude. Can be used in phrases like 大人になる (to become mature).
He hasn't fully matured yet.
I wish you would act more maturely.
Also used for psychological or social maturity, often in formal contexts.
Discretion, good judgment, or maturity in the sense of knowing how to behave appropriately. Often used in the phrase 分別がある (to have maturity/sense).
Maturity in the sense of mellow ripeness, often used for a person's character or skills that have fully developed over time. Literary.
The date when a financial obligation becomes due.
成熟 (せいじゅく) is a more formal, abstract term for maturity, often used for biological, psychological, or societal maturity. 大人 (おとな) is the everyday word for 'adult' and is commonly used to describe mature behavior in casual conversation.
The loanword マチュリティ is rarely used in Japanese and may not be understood. Stick to the native terms above.
精神的に成熟した人。
A mentally mature person.
彼は若いのに分別がある。
He is mature for his age.
円熟した演技を見せた。
He showed a mature performance.
償還期限が近づいている。
The maturity date is approaching.