demimonde Meaning, Definition & Usage

  1. noun a class of woman not considered respectable because of indiscreet or promiscuous behavior

WordNet

Dem`i*monde" noun
Etymology
F.; demi + monde world, L. mundus.
Definitions
  1. Persons of doubtful reputation; esp., women who are kept as mistresses, though not public prostitutes; demireps.

Webster 1913