Here's what rhymes with subsignatum.
erratum Words that almost rhyme with subsignatum
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