Polemic (noun, adjective)
polemic [puh-lem-ik, poh-]

noun
1. a controversial argument, as one against some opinion, doctrine, etc.
2. a person who argues in opposition to another; controversialist.

adjective
3. Also, polemical. of or relating to a polemic; controversial.

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Origin: 1630-40; < Greek polemikós of or for war, equivalent to pólem(os) war + -ikos -ic

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