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.
彼はどんな些細な問題でも最初に文句を言う、まさに文句を言う人だ。
translation
いつも文句を言う人