Here's what rhymes with pigginess.
                        
                        
                    
                                Words that almost rhyme with pigginess
stickiness  trickiness  dizziness  chilliness  itchiness  bitchiness  pithiness  tinniness  igneous  weariness  pitiless  bilious  giddiness  prettiness  silliness  tibias  tipsiness  wittiness  prissiness  hilliness  bleariness  serious  hideous  idiots  filthiness  riskiness  ligneous  grittiness  milkiness  silkiness  skinniness  imperious  oblivious  vitreous  delirious  flimsiness  friskiness  princeliness  skimpiness  mysterious  affiliates  initiates  insidious  amphibious  fastidious  invidious  lascivious  percipience  experience  deleterious  resilience  lineaments  punctilious  supercilious  incipience  propitiates  recipients  ignominious  miscreants  conciliates  disaffiliates  inexperience  consanguineous