noun, noun which may take the genitive case particle 'no'
age-appropriate; befitting one's age
Describes behavior, appearance, or things that are suitable for a person's age. Often used in the phrase 年齢相応の.
彼の考え方は年齢相応ではない。
His way of thinking is not appropriate for his age.
年齢相応の服装を心がけている。
I try to dress in an age-appropriate manner.
Similar meaning, but 年相応 is slightly more casual and uses the native Japanese reading とし instead of 年齢.
Compound of 年齢 (nenrei, 'age') and 相応 (sōō, 'suitable, appropriate').