created sense approved 少年老成 · shàoniánlǎochéng · mature
少年老成
shàoniánlǎochéng
mature
acting with the wisdom, steadiness, or experience of an older person despite being young
他年纪虽轻,但处事稳重,显得少年老成。
idiom
created sense approved 少年老成 · shàoniánlǎochéng · staid
少年老成
shàoniánlǎochéng
staid
lacking the energy, spirit, or vivacity typical of youth; excessively serious or stiff
这孩子总是老气横秋的,未免有些少年老成了。
idiom