spoilsport
🇺🇸
/ˈspɔɪlspɔːrt/
🇬🇧
/ˈspɔɪlspɔːt/
A person who prevents others from enjoying themselves.
You're such a spoilsport for not wanting to play games with us.
你真的是個掃興的人,不想和我們一起玩遊戲。