The antonyms for the phrase "more well-worn" would be "less used," "new," "unmarred," "unspoiled," or "unfamiliar." These words describe items, places, or concepts that have not been used or experienced as frequently or as intensely as something that is "well-worn." For example, a new book could be less used than an old, well-worn book or an unexplored trail could be less familiar to someone than a well-worn path. Using antonyms for the phrase "more well-worn" helps to convey a sense of freshness, novelty, and unexplored possibilities while still maintaining the sense of wear and tear that comes with use and experience.