Dumbbell rhymes with:
aiguebelle, amabel, annabel, assubel, barbell, bluebell, claribel, cowbell, decibel, doorbell, elmootazbell, isabel, isabelle, lilybell, rosabel, tarbell, willabelle
Dumbbell sounds like:
danville, denapoli, denoble, detemple, dimple, dinapoli, downfall, downplay