Polemicise is a verb that means to engage in a controversial debate or argument. If you're looking for synonyms for this term, there are plenty of options that can help you convey the same idea in different words. Some of these synonyms include argue, dispute, debate, quarrel, contest, wrangle, and clash. You could also use words like discuss, deliberate, or analyze to express a more measured approach to debating a particular topic. Other synonyms for polemicise may depend on the context in which the word is being used, and may include words like criticize, lambaste, or attack. Ultimately, the right synonym for polemicise will depend on the specific situation and the tone you wish to convey.