A polemic (pron.: /pəˈlɛmɪk/) is a contentious argument that is intended to establish the truth of a specific belief and the falsity of the contrary belief. Polemics are mostly seen in arguments about very controversial topics.
The art or practice of such argumentation is called polemics.
A person who often writes polemics, or who speaks polemically, is a polemicist or a polemic. The word is derived from the Greek πολεμικός (polemikos), meaning “warlike, hostile”, which comes from πόλεμος (polemos), “war”.
“To argue with a man who has renounced the use and authority of reason, and whose philosophy consists in holding humanity in contempt, is like administering medicine to the dead, or endeavoring to convert an atheist by scripture.” – Thomas Paine