grumbler
🇺🇸
/ˈɡrʌmblər/
🇬🇧
/ˈɡrʌmblə(r)/
noun
R
a person who often complains about small things
The grumbler in the office always complains about the coffee.
辦公室裡總是抱怨咖啡的人。
translation
愛抱怨的人