millionairess

[ mil-yuh-nair-is ]

/ ˌmɪl yəˈnɛər ɪs /

a woman who is a millionaire.

the wife of a millionaire.

Origin of millionairess

First recorded in 1880–85; millionaire + -ess

See -ess.

Sophia Loren sang an English version, Zoo Be Zoo Be Zoo, in The Millionairess, a 1960 film that co-starred Peter Sellers.

‘Mad Men’ Premiere: A History of ‘Zou Bisou Bisou,’ Megan’s Sultry Song to Don |Lauren Streib |March 26, 2012 |DAILY BEAST
She is also shown eating Kraft singles, no behavior fitting of a millionairess.

Did She Do It? |Choire Sicha |December 1, 2008 |DAILY BEAST
If she were a princess or a millionairess, she might be glorified by newspapers as a beauty.

The Second Latchkey |Charles Norris Williamson and Alice Muriel Williamson
"Perhaps you'd like to give Miss Edith something on your own account," suggested Dilys craftily to the millionairess.

The Leader of the Lower School |Angela Brazil

The millionairess walked to the fireplace, and stood leaning over the high fender, sharpening a cherished stump of lead pencil.

The Leader of the Lower School |Angela Brazil
The millionairess won't fork out unless she feels inclined, I can tell you that, my child.

The Leader of the Lower School |Angela Brazil
Not to meet some American millionairess who would be smitten with him and his titles!

Luna Benamor |Vicente Blasco Ibez