"Viscountess Astor" is a title that refers to Nancy Astor, the first female Member of Parliament in the United Kingdom. The word "Viscountess" is a noble title that signifies the wife of a Viscount. However, there are several synonyms that people use to refer to Nancy Astor. Some of these include "Lady Astor," "Baroness Astor," and "Dame Nancy Astor." These titles are also related to her position in the British nobility and her political contributions. Regardless of the synonym used, Nancy Astor remains a notable figure in history, and her influence resonates to this day.