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