The antonyms for the word "most moss-grown" include fresh, new, modern, updated, innovative, and modernized. The term "most moss-grown" is generally used to describe something that is old, outdated, or dull. If you are looking for the opposite of this term, you should look for words that express something that is new, bright, and innovative. These words are often used to emphasize the contrast between something old and new, such as a modern building compared to a moss-grown church. By using antonyms to describe something, you show a deeper understanding of the concept and are able to communicate more effectively with others.