chunter
/ˈtʃʌntə(r)/verb
no obj.
1- Brit. informal chatter or grumble monotonously〈英, 非正式〉喋喋不休; 咕哝：
they were chuntering on about the drains.
他们咕咕哝哝抱怨着排水设备。
1.1
- no obj., with adverbial of direction move slowly and noisily in a particular direction（朝某处）缓慢嘈杂移动：
the car came chuntering up the track.
轿车沿路吱嘎吱嘎缓慢行驶。
词源
late 17th cent.: probably imitative.