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