spoilsports

英 [ˈspɔɪlspɔːts]

美

n.  扫兴的人
spoilsport的复数

柯林斯词典

• 叫人扫兴的人;败兴者
  If you say that someone is aspoilsport, you mean that they are behaving in a way that ruins other people's pleasure or enjoyment.