0 a group of people who live and behave in ways that are not traditionally accepted as normal or morally correct:
He mixed with the bohemian demi-monde and ended up as the avant-garde publisher of Lady Chatterley's Lover.
Back in the 60s and 70s, she was a feature of London's demi-monde, an exotic name on the nightclub circuit, linked with a string of rock stars.
What lies beneath the cardboard veneer of Vegas glamour is a demi-monde of strippers, pornographers, drug dealers, waifs and runaways.
The director was a doyen of the shabby demi-monde of London's arts world in the Sixties and Seventies.