{f} wander about in a dreamy or careless manner; chatter aimlessly in an idle fashion; rumble; growl; complain, mutter discontentedly, grumble (British)
To mutter; to mumble; to grumble; to speak indistinctly or disconnectedly; to talk incoherently
The period between 1645 and 1715 marked by records and other indications of very low levels of sunspot activity of Earth's sun, corresponding to a period of global cooling