Here's what rhymes with kappiness.
happiness sappiness snappiness Words that almost rhyme with kappiness
patchiness chattiness fattiness faddiness nattiness scratchiness canniness gaseous tackiness bagginess glassiness shagginess classiness cragginess malleolus nastiness craftiness scantiness ghastliness bassinets brassiness habeas ambience ambiance dalliance palliates valiance draftiness pancreas bathyscaphs transience pantheists retaliates transients instantaneous