to roar

from a presumed derivative of ( to "moo"); to bellow (roar):--roar.

middle voice of an apparently primary verb; to "roar":--roar.

a primitive root (compare הוּם); to make a loud sound (like English 'hum'); by implication, to be in great commotion or tumult, to rage, war, moan, clamor; clamorous, concourse, cry aloud, be disquieted, loud, mourn, be moved, make a noise, rage, roar, sound, be troubled, make in tumult, tumultuous, be in an uproar.

a primitive root; to rumble or moan; [idiom] mightily, roar.