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Synonyms

monsieur

American  
[muhs-yur, muh-syœ] / məsˈyɜr, məˈsyœ /

noun

plural

messieurs
  1. the conventional French title of respect and term of address for a man, corresponding to Mr. or sir.


monsieur British  
/ məsˈjɜː, məsjø /

noun

  1. a French title of address equivalent to sir when used alone or Mr when placed before a name

"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 monsieur

1490–1500; < French: literally, my lord (originally applied only to men of high station); sire

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Watching Tom turn that into sharable, pull-apart monkey bread made me wonder: if a croque monsieur could get the Bundt-pan treatment, why not a funeral sandwich too?

From Salon • Sep. 30, 2025

Croque monsieur is a French sandwich served hot with gooey, melted cheese.

From BBC • Jun. 27, 2025

Lightning struck twice when Bernath took the classic tuna melt and elevated it by giving it a French croque monsieur treatment.

From Seattle Times • May 31, 2022

The Julia Child Challenge In the season finale, the three finalists prepare four-course meals from Child’s classic recipes: a croque monsieur, duck a l’orange, boeuf bourguignon and a croquembouche.

From Los Angeles Times • Apr. 18, 2022

But monsieur could not wait even a ‘flash of time’, and in the middle of the speech departed to find mademoiselle himself.

From "Little Women" by Louisa May Alcott