Here's what rhymes with undereffected.
                        
                        
                    
                                affected  effected  perfected  connected  directed  selected  collected  elected  protected  reflected  erected  infected  projected  suspected  corrected  objected  dissected  expected  detected  neglected  injected  inflected  disinfected  reelected  Words that almost rhyme with undereffected
vested  fetid  felted  hefted  second  headed  settled  arrested  tested  melted  rested  rented  nested  belted  petted  sectioned  smelted  chested  tented  foetid  jested  method  presented  attempted  threatened  invented  invested  manifested  offended  protested  reckoned  tempted  ascended  augmented  resented  cemented  herald  infested  intercepted  legged  threaded  unsettled  wedded  beckoned  crested  fermented  shredded  speckled  breasted  freckled  nettled  metalled  petalled  mentioned  represented  suggested  attended  assembled  implemented  legend  oriented  tended  amended  indebted  welcomed  contented  contested  lessened  congested  ingested  lengthened  leveled  levelled  nestled  reddened  wrestled  bareheaded  beveled  resettled  revelled  bevelled  deadened  deafened  freshened  leavened  meddled  peddled  penciled  pencilled  pensioned  reveled  melded  pebbled  pedaled  upended  splendid  suspended  defended  descended  documented  strengthened  supplemented  blended  predestined  disheveled  dishevelled  trebled  complexioned  emended  millisecond  semiarid  subtended  undefended  lightheaded  nanosecond  untended  extended  intended  depended  questioned  pretended  apprehended  resembled  trembled  condescended  intrepid  reassembled  disassembled  dissembled  embezzled  imperiled  unmentioned  recommended  unquestioned  superintended  overextended