Here's what rhymes with plategirder.
                        
                        
                    
                                murder  girder  Words that almost rhyme with plategirder
merger  nurture  searcher  disturber  usurper  converter  burner  burgher  burger  purser  turner  further  worker  server  learner  murmur  cursor  fervor  firmer  burglar  sterner  stirrer  surfer  mercer  verger  observer  precursor  demurrer  preserver  severer  coworker