of noble character; of virtuous character
Rare, formal term describing a person of high moral integrity. Often used in literary or elevated contexts.
He is known as a person of noble character.
高潔 alone means 'noble' or 'pure-hearted', while 品性高潔 specifically emphasizes nobility of character or moral integrity.
人格者 is a more common term for a person of good character, whereas 品性高潔 is a rarer, more formal compound.
Compound of 品性 (character, moral quality) and 高潔 (noble, pure). The exact historical derivation is uncertain, but it follows a common Sino-Japanese pattern for formal descriptive compounds.