Chunners

Part of speech: verb

Definitions

1. Complains or mutters discontentedly in a low, steady, often barely audible voice, usually to oneself
2. Keeps up a quiet, irritable stream of grumbling remarks, typically while doing some task
3. Speaks in a low, grumbling tone full of dissatisfaction, often in a rambling way that few can follow

Etymology: "Chunners" is the third-person singular present form of "chunner," a verb meaning to grumble or mutter under one's breath in a complaining way. Because the source offers no further details about the base verb's date or origin, nothing more can be said with confidence here.