Here's what rhymes with decontenance.
Words that almost rhyme with decontenance
copiousness lonesomeness foaminess exogenous motionless hopelessness boastfulness brokenness chauvinists wholesomeness loathsomeness smokiness soulfulness soullessness dolefulness woefulness socialists homelessness eponymous emotionless outspokenness globalists precociousness ferociousness postmistress toastmistress atrociousness ufologists proteolysis unwholesomeness