\ ˈmət How to pronounce mutt (audio) \

Definition of mutt

1 : a stupid or insignificant person : fool
2 : a mongrel dog : cur

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Synonyms & Antonyms for mutt



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Mutt can now be used with either affection or disdain to refer to a dog that is not purebred, but in the word's early history, in the U.S. around the turn of the 20th century, it could also be used to describe a person - and not kindly: "mutt" was another word for "fool." The word's history lies in another insult. It comes from "muttonhead," another Americanism that also means essentially "fool." "Muttonhead" had been around since the early 19th century but it was not unlike an older insult with the same meaning: people had been calling one another "sheep's heads" since the mid-16th century.

Examples of mutt in a Sentence

it's an expensive camera, and I'd rather not turn it over to some mutt
Recent Examples on the Web Here, a look at three of the most popular, from Apple’s sleekly designed AirTags to geolocators for your beloved mutt. Geoff Nudelman, WSJ, 19 May 2021 On Monday morning, Spotty, a 7-year-old mutt with wiry gray fur and a pink tongue that vibrated as the dog panted in the mid-morning sun, posed for photos on the grass as Caleb Ng, 33, crouched to get a good angle. Washington Post, 10 May 2021 Last year, Stapleton penned his ode to Maggie -- a lab-terrier mutt -- on his previous album, Starting Over. Carl Lamarre, Billboard, 18 Apr. 2021 Sundog takes his 19-pound long-haired Mexican mutt hiking, rafting, and skiing, unless threatened by a ticket from a tree cop. Sundog, Outside Online, 3 Apr. 2021 Our mild-mannered mutt would turn out to be a serial killer laying low in our suburban home. Washington Post, 13 Dec. 2020 The author tracks the early space race like a sports event or a checkers game: First Sputnik 1, then Sputnik 2 (which carried the doomed mutt Laika in her overheating capsule). Edward Kosner, WSJ, 19 Nov. 2020 These purists who call the pusley a weed are the same folks who would call my elegant Harley a mutt. Steve West,, 7 Aug. 2020 Edward Jump drew a cartoon of Norton with Bummer and Lazarus, but really the Newfoundland dog and his mutt were famous on their own, legendary for the rescue of runaway horses and the capture of 85 rats in 20 minutes. Kevin Fisher-paulson,, 23 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mutt.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mutt

1899, in the meaning defined at sense 1

History and Etymology for mutt

short for muttonhead dull-witted person

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Last Updated

2 Jun 2021

Cite this Entry

“Mutt.” Dictionary, Merriam-Webster, Accessed 16 Jun. 2021.

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More Definitions for mutt



English Language Learners Definition of mutt

informal : a dog with parents of different breeds


\ ˈmət How to pronounce mutt (audio) \

Kids Definition of mutt

: a dog that is a mix of usually undetermined breeds

More from Merriam-Webster on mutt

Thesaurus: All synonyms and antonyms for mutt

Nglish: Translation of mutt for Spanish Speakers

Britannica English: Translation of mutt for Arabic Speakers


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