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