Here's what rhymes with unamusement.
                        
                        
                    
                                amusement  Words that almost rhyme with unamusement
movement  mouvement  improvement  inducement  mutant  unit  prudent  recruitment  fluent  tumult  coolant  rudest  souvent  truant  annuitant  loosest  entombment  rootlet  lewdest  student  newest  adjuvant  imprudent  impudent  pollutant  confluent  crudest  diluent  fewest  coolest  soonest  bluest  oculist  shrewdest  cruelest  duellist  hugest  sunhat  nudest  pursuant  translucent  smoothest  intuit  insouciant  canoeist  profusest  obtusest  gruesomest  cartoonist  disputant  quadruplet  bassoonist