Polemize is an action word that refers to the act of engaging in a heated debate or argument. There are many synonyms you can use for polemize depending on the context of your statement or sentence. Some of the best synonyms for polemize include dispute, challenge, contend, clash, wrangle, argue, and quarrel. These synonyms can be used interchangeably to indicate a verbal or written confrontation between two or more parties. No matter which synonym you choose to use for polemize, the meaning conveyed is the same: the act of engaging in a heated or passionate argument or debate.