Words That Rhyme With "Opportuneness" :
2 syllables:
anas, anus, blueness, bonus, brownness, brumous, clonus, coolness, coyness, Cronus, crudeness, cuteness, donis, dryness, Dumas, Enos, Faunus, fewness, freeness, gayness, genus, gonys, grayness, greyness, grumous, 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, rawness, rudeness, shrewdness, shyness, sinus, skewness, slowness, slyness, smoothness, soonest, spinous, spruceness, strumous, trueness, venous, Venus, vinous, wanness, weeness, wryness, Yuma's
3 syllables:
abstruseness, acuteness, aloofness, awayness, colonus, concinnous, coronis, Delphinus, diffuseness, diluteness, dominus, echinus, germanous, humaneness, johannes, lagunas, Longinus, Maecenas, mundaneness, nasuteness, pandanus, Portunus, profaneness, profuseness, pulvinus, Salinas, saphenous, scalenus, silenus, Silvanus, Socinus, subduedness, subgenus, transhumance, uncinus, uncleanness, uncouthness, Vincennes, withdrawnness
4 syllables:
Amazonas, Antoninus, botulinus, farawayness, inhumaneness, intravenous, marianas, monoclinous