Here's what rhymes with differendum.
referendum Words that almost rhyme with differendum
tendon dentin distention intention momentum inattention hempen subvention indention intervention abstention supervention circumvention contravention nonintervention seldom venom addendum denim phenom welcome harem plenum vellum bedlam velum jetsam webcam envenom spectrum rectum septum unwelcome flagellum cerebellum interregnum plectrum bubblegum antebellum antiserum