When it comes to finding synonyms for the term "not conservative," there are several options to choose from. For instance, you may consider terms such as "progressive," "liberal," "forward-thinking," "open-minded," and "radical." Each one of these words carries its unique meaning and connotation, making the choice of which to use in a particular context highly dependent on the situation at hand. For example, "progressive" might suggest a focus on social and political change, while "radical" often implies more extreme viewpoints or methods. Ultimately, the best synonym for a concept as complex as "not conservative" will depend on the specifics of the subject you're discussing and the tone you're aiming to convey.