As verbs the difference between tousle and rumble
is that
tousle is to put into disorder; to tumble; to touse; to muss while
rumble is to make a low, heavy, continuous sound.
As an interjection rumble is
an onomatopoeia describing a rumbling noise.
As a noun rumble is
a low, heavy, continuous sound, such as that of thunder or a hungry stomach.