Here's what rhymes with plumness.
glumness Words that almost rhyme with plumness
rudeness blueness lewdness ulnas units useless ruthless coolness lupus eunuchs humus newness shrewdness aloofness crudeness roofless rootless muteness cuteness lulus spruceness houmous houmus mucous fruitless mucus prudence acuteness smoothness hubris toothless moonless obtuseness bootless clueless diffuseness humourless chukkas tuneups nuisance cubits fluence tulips tumults absoluteness astuteness dissoluteness truants juleps mullets abstruseness gullets profuseness sublets cutups hirsuteness movements foodstuffs mutants pollutants pursuance imprudence impudence congruous caduceus resoluteness coolants duellists glamourous manumits bouffants students improvements amusements avoirdupois scrofulous annuitants intuits quadruplets irresoluteness persecutions inducements disputants exiguous canoeists translucence jurisprudence