Here's what rhymes with certumst.
                        
                        
                    
                                Words that almost rhyme with certumst
amongst  just  dust  jumped  bust  dumped  pumped  bumped  pulsed  but  must  trust  thrust  touched  adjust  duct  butt  lust  stuffed  tucked  puffed  rust  ducked  gust  lumped  slumped  stunt  tuft  punt  putt  thumped  tsarist  tut  what  cut  front  adult  rushed  shut  cult  hunt  hut  robust  unjust  blunt  brushed  crust  flushed  gut  nut  shunt  blushed  hushed  nought  plucked  punched  repulsed  sucked  brunt  cupped  mot  strut  bunched  cunt  fucked  gulped  gushed  rut  slut  supped  wot  discussed  corrupt  crushed  disgust  distrust  abrupt  occult  untouched  affront  clutched  mistrust  deduct  entrust  erupt  grunt  hunched  glut  lunched  readjust  rebuffed  rebut  retouched  result  conduct  somewhat  insult  instruct  interrupt  disrupt  obstruct  convulsed  defunct  exult  uncut  construct  confront  consult  antitrust  aqueduct  engulfed  undercut  coconut  waterfront  reconstruct