Here's what rhymes with arenaceous.
Words that almost rhyme with arenaceous
unevenness deaconess cenotaphs vehemence feebleness treasonous edematous peacefulness pediments heedlessness dreaminess facetiousness speciousness creaminess grievousness ingeniousness needlessness recentness ceaselessness gleefulness steaminess covetousness sleeplessness deceitfulness speechlessness egregiousness