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