Words That Rhyme With "Untrueness" :
2 syllables:
anas, anus, blueness, bonus, clonus, coolness, coyness, cuteness, donis, Dumas, Enos, Faunus, fewness, gayness, genus, gonys, heinous, highness, humous, humus, Innes, Inness, Janus, Jonas, keenness, leanness, lewdness, linus, looseness, lowness, maness, minas, Minos, minus, moonless, munis, muteness, newness, nudeness, onus, pannus, planeness, puma's, shyness, sinus, skewness, slowness, slyness, smoothness, soonest, spinous, stannous, tonus, trueness, tunas, tuneless, Tunis, venous, Venus, vinous, wanness, weeness, Yuma's
3 syllables:
acuteness, aloofness, astuteness, awayness, colonus, concinnous, coronis, Delphinus, diffuseness, diluteness, dominus, echinus, germanous, humaneness, johannes, lagunas, Longinus, Maecenas, mundaneness, Mutinus, nasuteness, obtuseness, pandanus, Plotinus, Portunus, profaneness, profuseness, pulvinus, Salinas, saphenous, scalenus, silenus, Silvanus, Socinus, subduedness, subgenus, transhumance, uncinus, uncleanness, uncouthness, Vincennes
4 syllables:
Amazonas, Antoninus, botulinus, farawayness, inhumaneness, intravenous, laurustinus, marianas, monoclinous, opportuneness