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