polemic (n.)youdaoicibaDictYouDict[polemic 词源字典]
1630s, "controversial argument or discussion," from French polémique (16c./17c.), noun use of adjective meaning "disputatious, controversial" (see polemic (adj.)).[polemic etymology, polemic origin, 英语词源]
polemic (adj.)youdaoicibaDictYouDict
1640s, from French polémique (from Middle French polemique) "disputatious, controversial," or directly from Greek polemikos "of war, warlike, belligerent; skilled in war, fit for service; like an enemy, stirring up hostility," from polemos "war," of unknown origin. Related: Polemical (1630s).