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