belief that human nature is fundamentally evil; cynicism about mankind
A philosophical term, often contrasted with 性善説 (belief in innate human goodness). Used in discussions of human nature, ethics, and political thought.
Antonyms: 性善説
The theory that human nature is evil was advocated by Xunzi.
彼の政治思想の根底には性悪説がある。
At the root of his political thought is a cynical view of human nature.