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