noun, na-adjective
upright character; noble nature
Describes a person's innate moral quality as upright and refined. Literary and somewhat old-fashioned; in modern Japanese, expressions like 性格が正しい or 高潔な人柄 are more common.
彼は資性端正な人物として知られていた。
He was known as a person of upright character.
A four-character compound of classical origin, combining 資 (innate quality), 性 (nature), 端 (correct), and 正 (righteous). The exact historical derivation is uncertain; it is a literary expression not commonly used in modern speech.