noun
inborn nature; innate disposition
A formal, somewhat literary term for one's inherent character or temperament. Rare in everyday conversation; more common in philosophical or psychological contexts.
彼の穏やかな態度は、生まれつきの稟性によるものだ。
His gentle manner comes from his inborn nature.
教育は大切だが、稟性を変えることは難しい。
Education is important, but it is difficult to change one's innate disposition.