noun
informal傻瓜;笨蛋 a silly or stupid person
数据来源:WordNet
Hermione Granger was on the edge of her seat and looked desperate to start proving that she wasn 't a dunderhead .
而荷米恩·格林佐则坐得直直的,屁股只沾了一点儿椅子边,好像这样就能向史纳皮证明,她绝不是蠢才似的。