Words That Rhyme With "Rhombus" :

2 syllables:

awmous, commas, compas, Fonda's, hondas, jambos, limbus, nimbus, plumbous, pompous, sombrous, Thomas, thrombus, tonga's, wamus

3 syllables:

Columbus, humongous, iambus

4 syllables:

5 syllables:

cumulonimbus, Epaminondas