Here's what rhymes with prothoracicotrophic.
                        
                        
                    
                                trophic  hypertrophic  Words that almost rhyme with prothoracicotrophic
yogic  aerobic  chromic  clonic  phobic  gnomic  biopic  heroic  anaerobic  homesick  cyclonic  stoic  moronic  eukaryotic  arachidonic  benzoic  bobolink  hydrophobic  claustrophobic  agoraphobic  protozoic  goldbrick  homophobic  anticyclonic