Here's what rhymes with impressionnent.
                        
                        
                    
                                Words that almost rhyme with impressionnent
resonant  impressionist  relevant  preeminent  redolent  intelligent  feminist  irrelevant  prevalent  prejudiced  baronet  decadent  petulant  expressionist  definite  settlement  delicate  affectionate  embarrassment  indefinite  requisite  specialist  therapist  negligent  malevolent  pleasantest  unprejudiced  celebrant  perfectionist  pestilent  registrant  polemicist  secondment  imperilment  tepidest  development  deficit  antecedent  benevolent  desolate  nonresident  resettlement  embezzlement  gentlest  unintelligent  envelopment  geneticist  eugenicist  carefullest  metricate  restfullest  prerequisite  pessimist  centralist  nonspecialist  redevelopment  anesthetist  underdevelopment