mutt
Americannoun
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a dog, especially a mongrel.
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a stupid or foolish person; simpleton.
noun
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an inept, ignorant, or stupid person
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a mongrel dog; cur
Etymology
Origin of mutt
1900–05, short for muttonhead
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.
Paul Conyngham's months-long quest to fight his rescue mutt Rosie's cancer has grabbed the attention of OpenAI boss Sam Altman, who called it an "amazing story" in an X post on Friday.
From Barron's • Mar. 30, 2026
A mutt owned by Ed Koch’s chef also hung out at the residence.
From The Wall Street Journal • Feb. 2, 2026
At their feet circles Bertolt, the mutt they rescued from the street and named, with on-the-nose affection, after the German playwright and director Bertolt Brecht.
From Los Angeles Times • Oct. 27, 2025
Besides, treating topical humor in the same way that a toothless, mangy mutt gums a dumpster bone is not the same as maintaining neutrality.
From Salon • Jul. 31, 2025
Weather-beaten was the word—the house was a whipped mutt.
From "The Underground Railroad: A Novel" by Colson Whitehead
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.
