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