What are the opposite words for conservative?

Conservative is often used to describe someone who is traditional, cautious, resistant to change, and holds on to traditional values. However, there are antonyms for this word, which describe people who are quite the opposite. For example, the opposite of conservative is liberal. A liberal person is seen as someone who supports progressive social changes, and is open to new ideas and ways of thinking. Another antonym would be radical. A radical person is someone who advocates for extreme changes, often resulting in a complete overthrow of the current system. Finally, another antonym for conservative is unconventional. This describes someone who tends to think outside the box, and is not bound by traditional restrictions or values.