FRENETIC Meaning of FRENETIC in English adj. 1 frantic, frenzied. 2 fanatic. frenetically adv.[ ME f. OF frenetique f. L phreneticus f. Gk phrenitikos f. phrenitis delirium f. phren phrenos mind ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012