Words That Rhyme With "Plenum" :

2 syllables:

annum, Benson, Bentham, Benton, Bremen, Brendan, Brennan, Brenton, centum, crinum, denim, denman, Denton, fenman, frenum, gentian, granum, henman, Henson, Jensen, Jenson, Kennan, Kenton, Kenyan, mention, minim, paynim, penman, pennon, pension, phenom, sensum, stannum, Steinem, stemen, tendon, tenon, tension, Trenton, venom, Yemen

3 syllables:

abstention, agendum, argentum, ascension, attention, cementum, contention, convention, credendum, dedendum, descension, detention, dimension, dissension, distention, envenom, extension, glucinum, Houyhnhnm, indention, intension, intention, invention, jejunum, momentum, obtention, omentum, prehension, pretension, prevention, pudendum, rabbanim, ramentum, recension, retention, sarmentum, subvention, suspension, sustention, Tarentum, tomentum, trigonum

4 syllables:

antirrhinum, apprehension, circumvention, coextension, comprehension, condescension, contravention, corrigendum, hypertension, hypotension, inattention, indumentum, interregnum, intervention, ligamentum, reconvention, referendum, reinvention, reprehension

5 syllables:

definiendum, hyperextension, inapprehension, incomprehension, mediastinum, misapprehension, nonintervention, paludamentum, pericementum