Polemic

Part of speech: noun (n.)

1. One who writes in support of one opinion, doctrine, or system, in opposition to another; one skilled in polemics; a controversialist; a disputant. The sarcasms and invectives of the young polemic. Macaulay.

2. A polemic argument or controversy.

Part of speech: adjective (a.)

1. Of or pertaining to controversy; maintaining, or involving, controversy; controversial; disputative; as, a polemic discourse or essay; polemic theology.

2. Engaged in, or addicted to, polemics, or to controversy; disputations; as, a polemic writer. South.