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