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