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