Definition of demi-monde in English:

1(in 19th-century France) a class of women considered to be of doubtful social standing and morality.

1. 1.1 A group of people on the fringes of respectable society.
   上流社会边缘的群体，半上流社会群体
   the demi-monde of arms deals

   从事武器交易的半上流群体。

   Example sentencesExamples

   • In this opening section he does a good job of introducing the reader to the demimonde of pulp writers and how the industry that published them worked.