The phrase "of the aforementioned one" can be replaced with a variety of synonyms to improve writing clarity. Some options include "of the previously mentioned," "of the aforesaid," "of the previously noted," or simply "of that." Using these alternatives can go a long way in making your writing more efficient, concise, and effective. Additionally, avoiding repetitive phrases such as "of the aforementioned one" can also help keep your writing flowing smoothly and avoid distracting your reader. So the next time you're looking for a synonym to improve your writing, consider using one of these alternatives for "of the aforementioned one".