Dictionary.com
Thesaurus.com
Synonyms

madam

American  
[mad-uhm] / ˈmæd əm /

noun

plural

mesdames, madams

  1. (often initial capital letter) a polite term of address to a woman, originally used only to a woman of rank or authority.

    Madam President; May I help you, madam?

  2. the woman in charge of a household.

    Is the madam at home?

  3. the woman in charge of a house of prostitution.

madam British  
/ ˈmædəm /

noun

  1. a polite term of address for a woman, esp one considered to be of relatively high social status

  2. a woman who runs a brothel

  3. informal a precocious or pompous little girl

  4. informal the lady of the house

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of madam

1250–1300; Middle English madame < Old French, originally ma dame my lady; dame

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.