Here's what rhymes with catalamus.
                        
                        
                    
                                pumice  Words that almost rhyme with catalamus
fungous  wantonness  numinous  erogenous  lameness  alumnus  ruckus  rumpus  compass  duchess  roughness  numbness  piteous  rashness  luckless  talus  hummocks  loveless  tapas  dumbness  justice  buckets  buttocks  fulness  fungus  toughness  trumpets  baseness  bloodless  buttress  cements  dullness  dulness  lustrous  puppets  stasis  stomachs  bulbous  cumbrous  nuggets  cutlass  abundance  judgments  colourless  encompass  judgements  muskets  oneness  sumptuous  wondrous  couplets  neuritis  abruptness  abutments  doublets  justness  bluntness  druggists  incubus  pedants  smugness  substance  adjustments  reluctance  circumference  repugnance  robustness  unrighteousness  effulgence  fistulous  indulgence  conductance  inductance  incumbents  encumbrance  hundredths  incumbrance  resultants  consultants  reasonableness  remonstrance  readjustments  superabundance  unreasonableness