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