Definition of dunderhead in English:

dunderhead

noun

informal
  • A stupid person.

    ‘show the dunderheads how the thing should be handled’
    • ‘Even a dunderhead knows that fans swelter in summer's bleachers and bundle in December's cold out of a love for the contests, not for sociological or business deconstructions.’
    • ‘The two dunderheads nodded mutely then bent to pick up the girl.’
    • ‘Just where do all the dedicated dorks, delightful dingbats, and dialectical dunderheads, plus a lively assortment of daffy ding-a-lings call home-sweet home?’
    • ‘This is not anyone's fault, really, except for the dunderheads who threw out all of the original prints.’
    • ‘That's partly because, to put it bluntly, the same old dunderheads are running the studios, and they show their true colors simply by opening their mouths.’
    • ‘I can teach you how to bottle fame, brew glory, even stopper death - if you aren't as big a bunch of dunderheads as I usually have to teach,’
    • ‘Sending someone to spy on him at work was probably that blundering dunderhead's idea.’
    • ‘Needless to say, those two dunderheads decided to initiate their favourite game of ‘Shove The Sister Around’.’
    • ‘Today's dunderheads could be tomorrow's geniuses.’
    • ‘Once again, I have to explain the obvious to a highly-paid dunderhead.’
    • ‘I am a cowboy shooter and do not approve of being portrayed as some dunderhead who is dumb enough to think cotton balls will protect my hearing.’
    • ‘You know what, I've just about had it with these dunderheads.’
    • ‘This School Board sounds like a bunch of dunderheads.’
    • ‘This is the side of the electorate who recognise a dunderhead when they see one.’
    • ‘Those cock-eyed dunderheads got me a weeks worth of suspension.’
    • ‘At least you didn't end up with a dunderhead of a boyfriend.’
    • ‘Military history is littered with tales of vital reports delayed by dunderheads, or overlooked by harassed staff officers: or simply not believed by high commanders.’
    • ‘Another unsuspecting dunderhead is ‘upbraided for making a grammatical mistake in a metaphorical tale about a dead bird.’’
    • ‘It seems that wherever I posit some belief of mine or aver a heartfelt conviction, some negative, clueless dunderhead seems to follow my commentary with inanities.’
    • ‘I'm going to go iron my hands for being a dunderhead.’
    idiot, ass, halfwit, nincompoop, blockhead, buffoon, dunce, dolt, ignoramus, cretin, imbecile, dullard, moron, simpleton, clod
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Origin

Early 17th century: compare with obsolete Scots dunder, dunner ‘resounding noise’; related to din.

Pronunciation:

dunderhead

/ˈdʌndəhɛd/