Here's what rhymes with methylderivatives.
                        
                        
                    
                                derivatives  Words that almost rhyme with methylderivatives
initiatives  primitives  fixatives  pyramids  thickenings  diminutives  grimaces  millilitres  pittances  tinglings  twinklings  remittances  clearances  christenings  windlasses  hindrances  interferences  disappearances  outdistances  eucalyptuses  reminiscences