noun
innate character; natural disposition
A formal, somewhat literary term for a person's inherent nature or temperament. Rare in everyday conversation; more common synonyms include 性質 (せいしつ) or 気質 (きしつ).
彼の禀質は穏やかで、誰とでもすぐに打ち解ける。
His natural disposition is gentle, and he quickly gets along with anyone.
Composed of 禀 (receive, be endowed with) and 質 (quality, nature). The exact historical derivation is uncertain, but the word is a Sino-Japanese compound referring to one's endowed nature.