下種根性げすこんじょう

noun

mean-spiritedness; base character; vulgar disposition

Refers to a person's innate pettiness, spitefulness, or low-minded nature. Often used as a strong insult or criticism of someone's character.

• あんなことを言いうなんて、下げ種す根こん性じょうが丸まる出だしだ。