oxymoron /ˌɒksɪˈmɔːrɒn/

• 1. 

  N-COUNT If you describe a phrase as an oxymoron, you mean that what it refers to combines two opposite qualities or ideas and therefore seems impossible. 矛盾修饰法 [技术]

  例：

  This has made many Americans conclude that business ethics is an oxymoron.

  这使许多美国人将商业道德归为一种矛盾修饰法。