The term "writtenness" refers to the quality or state of being written. While this word may not have an extensive list of synonyms, there are a few alternatives that can be used to convey a similar meaning. One alternative is "scriptedness", which emphasizes the act of writing a text or script. Another option could be "literacy", which indicates the ability to read and write. Furthermore, "textuality" can be employed to denote the written representation of ideas or concepts. Lastly, "composition" can imply the act or process of writing. Although these synonyms may not capture the exact nuance of "writtenness", they provide a variety of options when seeking alternative expressions.