demi-monde

/D EH1 M IY0 M AA0 N D/
noun
  1. 1

    A class of women maintained by wealthy protectors; female courtesans or prostitutes as a group.

  2. 2

    (by extension) A group having little respect or reputation.

    โ€œthe literary demimondeโ€

  3. 3

    (by extension) A member of such a class or group of persons.

Source: https://en.wiktionary.org/wiki/demi-monde, https://en.wiktionary.org/wiki/demimonde