1.
ungrateful; ingrate; thankless person
A person who does not appreciate or acknowledge kindness received. Also used as an adjective to describe such behavior.
恩知らずな人だ。
What an ungrateful person.
After receiving so much help, there's a limit to how ungrateful you can be.
Forms
恩 (kindness, favor, debt of gratitude) + 知らず (not knowing). Literally "not knowing kindness."
Usage
A strong word of criticism. Used as a na-adjective (恩知らずな) or as a noun to refer to an ungrateful person. Carries significant moral weight in Japanese culture, where gratitude (恩) and repaying kindness (恩返し) are deeply valued.