Words That Rhyme With "Dedendum" :
2 syllables:
Benton, Brendan, Brennan, Brenton, centum, condom, Emden, fandom, grandam, headen, Kennan, Kenton, leaden, Lennon, lenten, pennon, phenom, plenum, queendom, quondam, randem, random, redden, sedum, tandem, tendon, tenon, Trenton, venom, Windham, Windom, Wyndham
3 syllables:
agendum, Alundum, argentum, cementum, commendam, corundum, credendum, envenom, momentum, omentum, pudendum, ramentum, sarmentum, Tarentum, tomentum
4 syllables:
Armageddon, carborundum, corrigendum, explicandum, indumentum, ligamentum, memorandum, referendum