Mutt

//mʌt// noun, slang

noun, slang ·Common ·Middle school level

Definitions

Noun
  1. 1
    A mongrel dog (or sometimes cat); an animal of mixed breed or uncertain origin.

    "Mr. Beerbelly, Beerbelly / Get these mutts away from me / You know, I don't find this stuff amusing anymore"

  2. 2
    Alternative form of matha. alt-of, alternative
  3. 3
    an inferior dog or one of mixed breed wordnet
  4. 4
    A person of mixed racial or ethnic ancestry. derogatory, humorous, usually

    "Soon, we will no longer be an outpost of Europe, but a nation of mutts, a nation with hundreds of fluid ethnicities from around the world, intermarrying and intermingling. Americans of European descent are already a minority among 5-year-olds."

  5. 5
    An idiot, a stupid person. US, derogatory, slang

    "“I knew you weren’t such a mutt as you looked,” she cried."

Show 2 more definitions
  1. 6
    A person from the United States, in reference to sense 2. Internet, derogatory
  2. 7
    The snowy sheathbill. slang

Synonyms

All synonyms
curmongreladdle pateaddle-brainaddleheadairhead

Example

More examples

"The yapping mutt from next door hardly let me get a moment's shut-eye all night."

Etymology

Clipping of muttonhead.

Related phrases

heinz 57mutt and jeff

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.