noun
great evil; enormous wrongdoing
Refers to large-scale evil, corruption, or criminal acts, often in political, corporate, or historical contexts. Carries a weighty, serious tone.
その政治家は巨悪を暴くために証拠を集めた。
The politician gathered evidence to expose the great evil.
noun
Used for a person who embodies great evil; a monstrous villain. Often appears in dramatic or literary descriptions, and in news about organized crime or corruption.
彼は政界の巨悪と呼ばれている。
He is called the archvillain of the political world.
Compound of 巨 (きょ, 'great, huge') and 悪 (あく, 'evil, bad'). The combination straightforwardly means 'great evil'.