Here's what rhymes with oncanvas.
                        
                        
                    
                                canvas  canvass  Words that almost rhyme with oncanvas
chances  dances  stanzas  trances  advances  circumstances  cactus  callous  callus  palace  campus  lattice  madness  sadness  malice  bandits  carrots  gladness  landless  mattress  gametes  hapless  matchless  phallus  badness  classless  fatness  gadgets  gratis  mantras  caliphs  captious  caskets  gallops  gaskets  pathless  practice  balance  status  habits  planets  barracks  baskets  facets  rabbits  tablets  ballots  blackness  magnets  flatness  vastness  backups  factious  fastness  hammocks  handcuffs  hatchets  maggots  pallets  savants  tangents  thankless  trackless  casements  catchments  faggots  flatus  gallants  paddocks  palates  palettes  rackets  scallops  shallots  slackness  tactless  tyrannous  apparatus  talents  brackets  imbalance  pamphlets  patents  exactness  frankness  banquets  hamlets  inhabits  fascists  pageants  unbalance  blankness  fractious  pianists  fragments  disastrous  attachments  blankets  commandments  malpractice  reactants  compactness  enhancements  bankrupts  enchantments  combatants  detachments  enactments  digitalis  embankments  instalments  advancements  benefactress  counterbalance  propagandists  abstractness  noncombatants