Words That Rhyme With "Contralto" :

2 syllables:

alco, aloe, alto, ballow, balow, callow, Falco, fallow, gallo, gallow, hallow, mallow, molto, palo, sallow, shallow, smalto, tallow, thallo

3 syllables:

anatto, annatto, cavallo, corallo, dishallow, hidalgo, rialto