Rumbly is a 6 letter English word. It's valid Scrabble word worth 13 points. It's valid Words with friends word worth 16 points.
You can make 61 anagrams from letters in rumbly (blmruy).
First recorded in 1870-75; rumble + -y1
Buster growled a deep, grumbly, rumbly growl and started up after him.
At the sound of that deep, rumbly, grumbly voice it looked for a few minutes as if school would be broken up for that day.
Baker fired his automatic repeatedly near Kazu's ear, and presently his rumbly breathing changed and he opened his eyes.
It still rained very hard, but the wind did not howl so loudly, and the lightning was not so scary, nor the thunder so rumbly.