Here's what rhymes with kossom.
                        
                        
                    
                                awesome  possum  blossom  opossum  Words that almost rhyme with kossom
often  caution  cation  soften  rosin  precaution  libation  microcosm  herniation  macrocosm  tryptophan  calumniation  column  autumn  carom  bottom  solemn  forum  quorum  balsam  condom  dorsum  bonum  foursome  cockscomb  quantum  boredom  decorum  mortem  sorghum  nostrum  rostrum  wampum  flotsam  slalom  problem  drachm  stardom  thraldom  thralldom  metronome  gastronome  sugarplum  postpartum  falciparum