dunderhead
Word family adjectivedunderheadednoundunderheadednessdunderheaddunderheadism
dun·der·head /ˈdʌndəhed $ -ər-/ noun [countableC] old-fashioned STUPID/NOT INTELLIGENTsomeone who is stupid 笨蛋,蠢人 Origin dunderhead (1600-1700) Perhaps from Dutch donder “thunder” + English head