shirabe.org
1)

老成ろうせい

#51,988

Inflections of 老成
ろうせい
Meaning
    1. ①
      mature; experienced
      老衰ろうすいするな！老成ろうせいせよ！
      Don't grow old, grow wise!
    2. ②
      precocious; mature for one's age
Kanji
老 ロウ old man, old age, grow old 成 セイ turn into, become, get
Forms
Learn this word with smart reviews that adapt to you Save word
3)

ませる

#19,620

Inflections of ませる
ませる
Meaning
    1. to be precocious; to be mature for one's age; to seem grown-up; to seem mature
Forms
Learn this word with smart reviews that adapt to you Save word
Results