Here's what rhymes with vison.
                        
                        
                    
                                bison  Words that almost rhyme with vison
hyphen  siphon  syphon  horizon  atheism  liven  thriven  enliven  bedizen  ion  einen  heighten  siren  scion  hymen  lion  fibrin  frighten  tighten  widen  fireman  firemen  lichen  lighten  ripen  beiden  liken  whiten  titan  finespun  brighten  baryon  prion  lineman  linemen  pinyon  linesman  funnyman  enlighten  aphelion  veniremen  billycan  cotyledon  dandelion  perihelion  dicotyledon  monocotyledon