The phrase "well trodden" is often used to describe paths, trails, or ideas that have been used or explored extensively. However, there are many other phrases and words that can be used to convey the same meaning. Some of the synonyms for "well trodden" include "well-worn," "well-traveled," "familiar," "commonplace," "well known," "routine," "hackneyed," and "stereotypical." By using these different synonyms, writers and speakers can avoid repetition and create a more diverse range of vocabulary to express their ideas. Additionally, by using synonyms, they can convey different connotations and nuances to the reader or listener.