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