A polemicist is someone who engages in controversial discussions or arguments. There are several synonyms that can be used to describe a polemicist. One such synonym is debater, which emphasizes the argumentative aspect of the polemicist's role. Another synonym is controversialist, which highlights the fact that the polemicist tends to bring up controversial or provocative topics. A third synonym is disputant, which is a more neutral term that simply emphasizes the fact that the polemicist is engaged in a dispute or argument. Other synonyms include arguer, belligerent, and contrarian. Regardless of the specific term used, a polemicist is someone who is not afraid to challenge conventional wisdom and engage in lively intellectual debates.