Revolutionary is often used to describe something that is innovative, groundbreaking, or advocating for change. Therefore, unrevolutionary refers to something that lacks these qualities or is resistant to change. Antonyms for unrevolutionary include innovative, progressive, radical, and reformist - all of which indicate a willingness to challenge the status quo and drive change forward. Another antonym for unrevolutionary could be stagnant, as it suggests that something has remained unchanged for too long and is in dire need of being revitalized. Overall, these antonyms represent the opposite of unrevolutionary, portraying ideas, movements, or objects as visionary, forward-thinking, and transformative.