polemic (n.) Look up polemic at Dictionary.com
1630s, "controversial argument or discussion," from French polémique (16c./17c.), noun use of adjective meaning "disputatious, controversial" (see polemic (adj.)).
polemic (adj.) Look up polemic at Dictionary.com
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).