悪あく質しつ性せい

noun

malignancy; viciousness; underhandedness

Refers to the quality of being malicious, vicious, or underhanded, often in the context of actions, intentions, or character.

• 彼かれの行こう為いの悪あく質しつ性せいが問もん題だいになった。

  The malicious nature of his actions became an issue.

• この事じ件けんの悪あく質しつ性せいは極きわめて高たかい。

  The viciousness of this incident is extremely high.