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