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