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