Here's what rhymes with attestator.
                        
                        
                    
                                testator  Words that almost rhyme with attestator
investiture  competitor  senator  settler  predator  separator  pensioner  wrestler  restfuller  regular  secular  cellular  messenger  creditor  mariner  stepmother  pleasanter  presenter  specular  nebular  derringer  leveler  leveller  reveller  headhunter  reveler  telemeter  celebrator  recolor  commemorator  carefuller  irregular  molecular  executor  questioner  subcellular  inheritor  embezzler  seconder  freshener  strengthener  antechamber  confectioner  intercellular  multicellular  nonsecular  intracellular  hepatocellular  unicellular  extracellular  intermolecular  intramolecular  macromolecular