Why this word is great
BROOL — [Noun] A deep murmur. From the German Brüll ("a roar"), softened by time into something quieter, more subterranean. Unlike "murmur" (which flutters at the edges of hearing) or "roar" (which demands attention), a brool lingers beneath, felt as much as heard. It is the low hum of a distant waterfall through dense forest, the growl of a sleeping beast just beyond the firelight, or the quiet thrum of blood in your ears when the world falls silent—a reminder that even stillness has its own voice.