One possible synonym for "reversive" is "reversal." This term refers to the act of turning something inside out or upside down, often with the intention of changing its meaning or purpose. Other synonyms for "reversive" might include terms like "inversion," "flip-flop," or "about-face." These words all suggest a radical change of direction or orientation, which can be applied to a wide variety of contexts and situations. Whether you're talking about political beliefs, scientific discoveries, or personal relationships, the concept of reversibility remains an important and powerful idea for understanding our world.