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