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