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