Here's what rhymes with sardonically.
                        
                        
                    
                                harmonically  conically  phonically  bionically  chronically  laconically  demonically  monotonically  mnemonically  hydroponically  electronically  ultrasonically  histrionically  Words that almost rhyme with sardonically
comically  historically  symbolically  melodically  periodically  philosophically  methodically  analogically  diabolically  episodically  knowledgeably  ethnologically  lethargically  vitriolically  bucolically  metabolically  pedagogically  alcoholically  demagogically  technologically  catastrophically  genealogically  prehistorically  exorbitantly  anthropomorphically