Here's what rhymes with melodious.
                        
                        
                    
                                commodious  incommodious  Words that almost rhyme with melodious
copious  phobias  utopias  apologias  cornucopias  erroneous  coleus  associates  harmonious  holiness  loneliness  felonious  opprobrious  cosiness  coziness  mouldiness  nosiness  gaucheness  moldiness  doziness  ghostliness  unholiness  folksiness  acrimonious  ceremonious  dissociates  inharmonious  defoliates  parsimonious  sanctimonious  unceremonious  defoliants  disassociates  exfoliates  disharmonious