these words are used to express a low opinion of someone's intelligence
同义词：dunce??/??dunderhead??/??numskull??/??blockhead??/??bonehead??/??lunkhead??/??hammerhead??/??knucklehead??/??loggerhead??/??muttonhead??/??dumbass??/??fuckhead
And I know that Lou is one of those shitheads.
NEWYORKER: Ask Me If I Care
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。