The term "more extremist" typically refers to someone who holds extreme views or beliefs which go beyond what is considered acceptable or reasonable. Antonyms for this phrase might include "moderate," "centrist," "compromising," or "middle-of-the-road." These words all imply a more measured or balanced approach to politics, ideology, or social issues, and suggest a willingness to consider different perspectives and opinions. By contrast, the term "more extremist" tends to connote a rigid or inflexible mindset, one that is resistant to change or compromise. While extremism has its place in certain contexts, such as activism or revolution, it can also become dangerous and damaging when taken too far.