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