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