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