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