Here's what rhymes with raffermissement.
                        
                        
                    
                                Words that almost rhyme with raffermissement
dissonant  filament  ligament  militant  omnipotent  vigilant  virulent  medicament  sycophant  nimblest  legitimate  participant  ambivalent  coincident  silicate  militarist  visitant  littlest  ministrant  nonvirulent  nonmilitant  ficklest  difficult  magnificent  predicament  simulate  stimulant  empiricist  belittlement  cheerfullest  equivalent  imprisonment  particulate  grandiloquent  precipitant  nonparticipant  timpanist  abolitionist  individuate  dissimulate  inarticulate  exhibitionist  gesticulate  nonequivalent  coalitionist  prohibitionist  indiscriminate