A brontide is a low rumbling sound like thunder thought to be caused by feeble earth tremors (Merriam-Webster). I also like the way the word sounds when you say it. Try it now.
“BRON-tide.” Feels good, doesn’t it?
If you’ve ever experienced the brontide, let me know in the comments.
“While standing on the precipice of the cliff looking down, Harry heard the brontide. It seemed like a long, low warning not to jump.”