Here's what rhymes with administer.
                        
                        
                    
                                minister  Words that almost rhyme with administer
minuter  visitor  vinegar  dilator  missioner  riveter  picketer  prisoner  signature  inhibitor  listener  perimeter  titular  fiddler  peninsular  limiter  parishioner  cricketer  thickener  littler  spinnaker  tickler  signaler  signaller  chiseler  driveler  fickler  winsomer  similar  cylinder  simpler  commissioner  petitioner  solicitor  inquisitor  altimeter  exhibitor  fibular  stickler  swindler  dosimeter  stiffener  cheerfuller  particular  singular  articular  dissimilar  contributor  curricular  estimator  auricular  conditioner  conspirator  confiscator  practitioner  distributor  reticular  testicular  lenticular  vasodilator  vehicular  calligrapher  perpendicular  overparticular  extracurricular  extravehicular