Here's what rhymes with parallelogram.
                        
                        
                    
                                gram  lamb  ram  clam  lam  cram  gramme  yam  glam  dam  damn  jam  telegram  cam  ham  sham  epigram  kilogram  nam  slam  tam  tram  dram  milligram  jamb  pram  buckram  scram  wham  flambe  diagram  exam  swam  hologram  anagram  scam  spam  diaphragm  histogram  monogram  cofferdam  sonogram  doorjamb  pentagram  grandam  centigram  kissogram  quondam  hexagram  mammogram  cablegram  ideogram  radiogram  cardiogram  diazepam  electrocardiogram  electroencephalogram  Words that almost rhyme with parallelogram
ran  clan  rang  yang  gran  lang  langue  clang  lan  can  than  man  plan  van  hang  ban  fan  gang  pan  sang  tan  bang  dan  shan  slang  bran  kan  kann  nan  pang  san  tang  chang  dann  fang  gan  dang  flan  prang  scan  span  sprang  harangue  rattan  cyan  outran  saran  rehang  began  caravan  sedan  divan  overran  japan  shebang  fisherman  middleman  overhang  boomerang  anchorman  bogeyman  weatherman  boogeyman  minuteman  whizzbang  businessman  journeyman  catamaran  nurseryman  serviceman  minivan  radioman  turbofan  counterman  paperhanger  orangutang  assemblyman  handyman  newspaperman  pleonasm