Definition of muttonhead in English:

muttonhead

noun

informal
  • A stupid person.

    ‘straighten up there, you shambling muttonheads!’
    • ‘Maggie had a great voice, and he boomed out, ‘You're not a muttonhead; you're an All-American muttonhead.’’
    • ‘Similarly, the muttonheads who specialise in breeding particularly vicious strains, such as pit bulls, deserve lobotomies.’
    idiot, ass, halfwit, nincompoop, blockhead, buffoon, dunce, dolt, ignoramus, cretin, imbecile, dullard, moron, simpleton, clod
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Pronunciation

muttonhead

/ˈmʌtnhɛd/