The word "errorful" means full of errors. There are a few synonyms for this word that can be used interchangeably. Some of these synonyms include inaccurate, faulty, mistaken, flawed, and incorrect. These words are commonly used to describe something that is not correct or accurate. Additionally, words like imperfect, erroneous, imprecise, and unsound can also be used to describe something that contains mistakes or errors. When writing, it is important to use a variety of synonyms to add interest to your writing and to avoid repetition. By using these synonyms, you can effectively communicate the message you are trying to convey.