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