夙しゅく成せい

noun

precocity; early maturity

Rare literary noun for being precocious or developing early, especially in talent or intellect. Not used in everyday conversation.

• 彼かれの夙しゅく成せいぶりには周しゅう囲いも驚おどろかされた。

  Those around him were amazed by his precocity.