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