whippersnapper

noun

1. 狂妄小子
   a young and unimportant person who behaves in a way that others think is too confident and rude

1. N-COUNT 自以为是的人;妄自尊大的人
   If you refer to a young person as a whippersnapper, you disapprove of them because you think that they are behaving more confidently than they should.
   1. ...this bunch of irresponsible young whippersnappers.
      这群不负责任自以为是的年轻人

1. There are few sights quite as ugly to someone with your length of experience as a jargon-talking young whippersnapper who thinks he is destined for the top.
   对于拥有你这种经验相当的人，几乎没有什么场面比一位满嘴行话、自以为是、认为自己注定将升入高层的年轻人更丑陋的了。
2. I'll find him, that young whippersnapper!
   我将找到他，那个自以为是的小家伙！
3. Substitute whippersnapper for your chosen sexist or racist epithet and then imagine how many job interviews you can cram into your sudden abundance of free time.
   用自以为是的年轻人，来代替你选择的带有性别歧视或种族歧视的蔑称，然后设想一下，在你陡然充裕的闲暇时间里，能参加多少工作面试。

noun

1. someone who is unimportant but cheeky and presumptuous

   Synonym:    jackanapeslightweight