chunter
🇺🇸
/ˈtʃʌntər/
🇬🇧
/ˈtʃʌntə(r)/
to complain or talk about something in a grumbling way
She was chuntering about the weather all day.
그녀는 하루 종일 날씨에 대해 투덜거렸습니다.