"Wellworn" means something that is used frequently or worn out due to continued use. Some antonyms for this term include 'untouched,' 'new,' 'fresh,' 'unused,' 'virgin,' and 'uncultivated.' Other antonyms may include 'unfamiliar,' 'original,' 'unique,' 'distinct,' or 'rare.' Using contrasting words such as 'unblemished,' 'unmarked,' 'unexperienced,' and 'unacquainted,' can also help to provide a complete picture of what specifically could be opposite to 'wellworn.' By using an antonym, we can help to describe something in a more comprehensive manner, giving the reader a better idea of what we are referring to, which allows for a more nuanced understanding of the subject.