Dictionary.com
Thesaurus.com

rumbly

American  
[ruhm-blee] / ˈrʌm bli /

adjective

  1. attended with, making, or causing a rumbling rumbling sound.

Etymology

Origin of rumbly

First recorded in 1870–75; rumble + -y 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.