"Letted roll" is a phrase that may not be familiar to all readers, but it essentially means to allow something to proceed or happen uninterrupted. If you're tired of using the same phrase repeatedly, there are a range of synonyms to choose from. Some synonyms for "letted roll" include "let it go", "let it be", "let it happen", "let it proceed", "let it pass", "let it run its course", and "let it continue unimpeded". Each of these options conveys the same meaning as "letted roll" but can bring some variety and nuance to your writing. By incorporating a variety of synonyms, you can add depth and interest to your work.