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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.
Synonyms
- airhead
- birdbrain
- blockhead
- bonehead
- bubblehead
- chowderhead
- chucklehead
- clodpoll
- clodpole
- clot [British]
- cluck
- clunk
- cretin
- cuddy [British dialect]
- cuddie
- deadhead
- dim bulb [slang]
- dimwit
- dip
- dodo
- dolt
- donkey
- doofus [slang]
- dope
- dork [slang]
- dullard
- dum-dum
- dumbbell
- dumbhead
- dummkopf
- dummy
- dunce
- dunderhead
- fathead
- gander
- golem
- goof
- goon
- half-wit
- hammerhead
- hardhead
- idiot
- ignoramus
- imbecile
- jackass
- know-nothing
- knucklehead
- lamebrain
- loggerhead [chiefly dialect]
- loon
- lump
- lunkhead
- meathead
- mome [archaic]
- moron
- mug [chiefly British]
- natural
- nimrod [slang]
- nincompoop
- ninny
- ninnyhammer
- nit [chiefly British]
- nitwit
- noddy
- noodle
- numskull
- numbskull
- oaf
- pinhead
- prat [British]
- ratbag [chiefly Australian]
- saphead
- schlub [slang]
- shlub
- schnook [slang]
- simpleton
- stock
- stupe
- stupid
- thickhead
- turkey
- woodenhead
- yahoo
- yo-yo
Examples of mutt in a Sentence
Hannah Jackson, Vogue, 14 Aug. 2024
Temperatures that may be safe for a young, healthy mutt, may be lethal for a senior, overweight, brachycephalic purebred like a bulldog.
—Wes Siler, Outside Online, 26 July 2024
Her dog, a five-year-old mutt named Gracie, greeted me at the door.
—Evan Malmgren, Harper's Magazine, 21 Aug. 2024
What an absolute joy to see a pack of motley mutts trotting around St. Ann’s Warehouse, promenaded by everyone from Sandra Bernhard to Naomi Fry wearing matching toile puffers and beaded poop bag carriers.
—Laia Garcia-Furtado, Vogue, 12 Sep. 2024
See all Example Sentences for mutt 
Dictionary Entries Near mutt
Cite this Entry
“Mutt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mutt. Accessed 21 Nov. 2024.
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