noun which may take the genitive case particle 'no', noun
age-appropriate
Describes something suitable for one's age, especially clothing, hairstyles, or behavior. Often used in the phrase 年相応の～.
She dresses in a calm, age-appropriate manner.
Try to behave in a way that is appropriate for your age.
More formal and explicit synonym using 年齢 (age). 年相応 is slightly more colloquial and common in everyday speech.
Standard kanji spelling using 年 for 'age'.
Variant using 歳, which also means 'age' and is common in formal or written contexts.
Compound of 年 (とし, 'age') + 相応 (そうおう, 'suitable, appropriate'). The reading としそうおう is a straightforward combination of the two components.