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.
他總是第一個抱怨任何小問題，真是個愛發牢騷的人。
translation
牢騷鬼