Here's what rhymes with duffin.
                        
                        
                    
                                puffin  Words that almost rhyme with duffin
puffing  buffing  toughing  buzzing  stuffing  busing  bluffing  roughing  huffing  bussing  cuffing  luffing  ruffing  muffing  nothing  loving  rushing  brushing  blushing  brazing  fussing  gushing  shoving  sloughing  cussing  hushing  scuffing  snuffing  fluffing  hiving  trussing  rebuffing  shushing  mushing  mussing  fuzing  crushing  flushing  slaving  gloving  discussing  compassing  encasing  unblushing  airbrushing  atomising  enslaving  buskin  punkin  unpin  pumpkin  buckskin  bumpkin  dustbin  truncheon  drumlin  dustmen  curmudgeon  stuntmen  munchkin  chromatin  huntsmen