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