Denazify, which means removing Nazi ideas, beliefs, and symbols from a society, has a few antonyms that are applicable to its opposite meaning. One possible antonym is "Nazify," which refers to the action of promoting Nazi ideas, beliefs, and symbols in a society. Another antonym is "embrace fascism," which entails promoting and advocating for fascist ideologies in a society. A slightly more subtle antonym could be "tolerate Nazism," which implies allowing Nazi ideas, beliefs, and symbols to exist and persist in a society without actively promoting them. Ultimately, denazify is the opposite of promoting, endorsing, and supporting Nazi ideologies and beliefs in any way.