Where does “paroxysmic” come from?
paroxysmic (English) comes from English paroxysm, from Middle English paroxism, from Middle French paroxisme, from Old French peroxime, from Ecclesiastical Latin paroxismus, from Ancient Greek πᾰροξῠσμός, from Ancient Greek πᾰροξῡ́νω, from Ancient Greek πᾰρᾰ-.
paroxysmic (English): Relating to paroxysms
Ancestry of “paroxysmic”, step by step