Here's what rhymes with oncebrilliant.
                        
                        
                    
                                brilliant  resilient  Words that almost rhyme with oncebrilliant
distant  limit  pigment  richest  shipment  stringent  millet  billet  rivet  triplet  abridgment  flippant  pendent  abridgement  brisket  deliquescent  limpet  privet  trinket  devilment  shrillest  trivet  briskest  fitment  visit  efficient  minute  assistant  persistent  witnessed  biggest  deficient  fulfillment  malignant  resistant  ticket  delinquent  digit  enrichment  fulfilment  cricket  frigate  illicit  picket  pivot  proficient  strictest  astringent  biscuit  distanced  fittest  skillet  bigot  delimit  diffident  grimaced  wicket  demised  midget  civet  gimlet  gymnast  tippet  bewitchment  dimmest  grimmest  officiant  sickest  disenchant  divot  jennet  reshipment  slickest  slimmest  whippet  bedevilment  giblet  hiccoughed  hippest  nymphet  equipment  sufficient  commitment  nearest  contingent  implicit  simplest  dearest  existent  indignant  intermittent  prohibit  adherent  insistent  enlistment  fiercest  omniscient  oviduct  sublimate  complicit  palimpsest  snippet  spigot  swiftest  maleficent  outdistanced  stiffest  weirdest  spirit  consistent  coefficient  explicit  inherent  insufficient  coherent  indifferent  inefficient  inhibit  reminiscent  beneficent  infringement  nonexistent  violinist  cleverest  impingement  endearment  transshipment  nonmalignant  preterit  queerest  encystment  nonresistant  reenlistment  austerest  inconsistent  incoherent  equidistant  severest  coexistent  inspirit  sincerest  immunodeficient