Here's what rhymes with subum.
Words that almost rhyme with subum
sudden nubbin dubbin button mutton globin dudgeon erratum piton scutcheon exciton bludgeon escutcheon glutton unbutton androgen bellybutton ahem caecum custom humdrum buxom buncombe bunkum dumdum secundum accustom cementum jejunum corundum conundrum colostrum carborundum