misnomer

noun

mis·​no·​mer ˌmis-ˈnō-mər How to pronounce misnomer (audio)
1
: the misnaming of a person in a legal instrument
2
a
: a use of a wrong or inappropriate name
It is a misnomer to call it an "international airport," since nearly all flights are local.
b
: a wrong name or inappropriate designation
The name "Greenland" is a misnomer, since much of the island is covered by a massive ice sheet.
misnomered adjective

Did you know?

Don't Mistake the Meaning of Misnomer

What’s in a name? Well, in some cases, a name will contain an error, a misunderstanding, or a mislabeling. Historians have long noted that the Holy Roman Empire was not holy, nor Roman, nor an empire. The Battle of Bunker Hill was actually fought on Breed’s Hill. And the Pennsylvania Dutch are in fact of German ancestry. For such cases, we have the term misnomer, which can refer both to the use of an incorrect or inappropriate designation (as in “it’s a misnomer to call an orca a ‘killer whale’”) or to the designation itself. Regardless, there’s no mistaking the source of misnomer: it comes from the Anglo-French verb mesnomer (“to misname”) and ultimately has its roots in nomen, the Latin word for “name.”

Examples of misnomer in a Sentence

“International Airport” is something of a misnomer, since almost all the arriving and departing flights are local.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Bo Nix looked better than Dak Prescott, and the Daniel Jones-Jonathan Taylor Colts are 7-1 after an easy win over the Titans (what a misnomer). Brandon Funston, New York Times, 28 Oct. 2025 The surreal part of the show’s title is a bit of a misnomer. Jerry Saltz, Vulture, 19 Sep. 2025 The term has always been a bit of a misnomer, however. Adam Summers, San Diego Union-Tribune, 15 Sep. 2025 The name is a bit of a misnomer, though—the dinner-only restaurant serves Italian fare and local seafood, not high tea service. Julie Tremaine, Forbes.com, 1 Sep. 2025 See All Example Sentences for misnomer

Word History

Etymology

Middle English misnoumer, from Anglo-French mesnomer, from mes- mis- + nomer to name, from Latin nominare — more at nominate

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of misnomer was in the 15th century

Browse Nearby Words

Podcast

Cite this Entry

“Misnomer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/misnomer. Accessed 10 Nov. 2025.

Kids Definition

misnomer

noun
mis·​no·​mer (ˈ)mis-ˈnō-mər How to pronounce misnomer (audio)
: a wrong or unsuitable name

Legal Definition

misnomer

noun
mis·​no·​mer ˌmis-ˈnō-mər How to pronounce misnomer (audio)
: the misnaming of a person in a legal document or proceeding (as in a complaint or indictment)
specifically : the institution of proceedings against and service of process on the correct party using the incorrect name compare idem sonans

Note: Amendment of the pleadings is generally allowed in cases of misnomer.

Etymology

Anglo-French mesnomer, from mesnomer to misname, from Middle French mes- wrongly + nommer to name, from Latin nominare, from nomin-, nomen name

More from Merriam-Webster on misnomer

Last Updated: - Definition revised
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!