She was known as a demi-mondaine in the high society.

The party was filled with demi-mondaines.

I bought a bottle of demi-secs for the party.

The fortress was protected by a demi-lune.

The fortress was protected by demi-lunes.

She was a prominent figure in the demi-monde of Parisian society.

I bought a music demy notebook for my music compositions.

I found a demi-john in the antique store.

I have a collection of demi-johns in my basement.

The demi-mondes of Paris were known for their extravagant lifestyles.