The word "defile" means to pollute, spoil, or tarnish. Its antonyms include words like purify, sterilize, and cleanse. These words denote the process of making something pure and clean, free from impurities and contamination. Other antonyms for "defile" include enhance, beautify, and enrich, which imply adding value or improving something's condition. Essentially, any word expressing the idea of making something better or removing impurities can be considered an antonym for "defile." In a world where sanitation and cleanliness are paramount, it is important to know these antonyms and use them appropriately.