The term "fountain-youth" is often used to describe something that is youthful, refreshing, and full of life. However, there are many other words that can be used as synonyms for this term. Some examples include "vibrant," "lively," "energetic," "buoyant," "spry," "sparkling," "zesty," and "animated." All of these words evoke a sense of vitality and vitality, which is what makes them such great alternatives to "fountain-youth." By using these words in place of the more traditional term, you can create a more dynamic and engaging piece of writing that captures the spirit of youthfulness and effervescence.