Rumbling

a. & n.

1.

a. & n. from Rumble, v. i.

Noun	1.	rumbling - a loud low dull continuous noise; "they heard the rumbling of thunder" Synonyms: grumble, grumbling, rumble
Adj.	1.	rumbling - continuous full and low-pitched throbbing sound; "the rumbling rolling sound of thunder" Synonyms: grumbling

boom, booming, cannonading, echo, echoic, echoing, fulminating, growl, growling, grumble, grumbling, lingering, pealing, persistent, reboant, reboation, rebound, rebounding, reecho, reechoing, repercussive, resound, resounding, reverberant, reverberating, reverberation, reverberatory, roaring, rolling, rumble, sounding, thunder, thundering, thunderlike, thunderous, thundery, tonitruant, tonitruous, undamped, volleying