JMdict: 1618700

老成 【ろうせい】

  1. [adj-na,n,vs,vi] mature; experienced
  2. [adj-na,n,vs,vi] precocious; mature for one's age
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
老 Old Man, Old Age, Grow Old ロウ お.いる, ふ.ける
成 Turn Into, Become, Get, Grow, Elapse, Reach セイ, ジョウ な.る, な.す, -な.す