whinger
🇺🇸
/ˈwɪndʒər/
🇬🇧
/ˈwɪndʒə(r)/
noun
R
A person who frequently complains in a bothersome manner.
He's always the first to complain about any minor issue, such a whinger.
他总是第一个抱怨任何小问题，真是个爱发牢骚的人。
translation
牢骚鬼