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Noun: dunderhead  'dún-du(r),hed
  1. A stupid person; used to express a low opinion of someone's intelligence
    - dunce, numskull, blockhead, bonehead, lunkhead [N. Amer], hammerhead, knucklehead, loggerhead [archaic], muttonhead, dumbass [N. Amer], lamebrain, chowderhead [N. Amer], pea brain, bubblehead, numbskull, twonk [Brit], lunk [N. Amer]

Derived forms: dunderheads

Type of: dolt, dullard, poor fish, pudden-head [US], pudding head, stupe, stupid, stupid person

Encyclopedia: Dunderhead