Definition of dunderhead in English:

dunderhead

noun

informal
  • A stupid person.

    • ‘Once again, I have to explain the obvious to a highly-paid dunderhead.’
    • ‘Those cock-eyed dunderheads got me a weeks worth of suspension.’
    • ‘Today's dunderheads could be tomorrow's geniuses.’
    • ‘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.’
    • ‘You know what, I've just about had it with these dunderheads.’
    • ‘Sending someone to spy on him at work was probably that blundering dunderhead's idea.’
    • ‘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,’
    • ‘This School Board sounds like a bunch of dunderheads.’
    • ‘This is the side of the electorate who recognise a dunderhead when they see one.’
    • ‘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.’
    • ‘I'm going to go iron my hands for being a dunderhead.’
    • ‘Another unsuspecting dunderhead is ‘upbraided for making a grammatical mistake in a metaphorical tale about a dead bird.’’
    • ‘Needless to say, those two dunderheads decided to initiate their favourite game of ‘Shove The Sister Around’.’
    • ‘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.’
    • ‘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.’
    • ‘At least you didn't end up with a dunderhead of a boyfriend.’
    • ‘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?’
    • ‘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.’
    • ‘This is not anyone's fault, really, except for the dunderheads who threw out all of the original prints.’
    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

/ˈdəndərˌhed/