* The title is already concise. If the title of your book is already short and to the point, there's no need to add the word "concise" to it. For example, the title of Ernest Hemingway's novel "The Old Man and the Sea" is already concise, so there's no need to call it "The Concise Old Man and the Sea."
* The title is not relevant to the content of the book. The word "concise" means "expressing something in a few words or in a short and clear way." If the title of your book is not relevant to the content of the book, then using the word "concise" to describe it could be misleading. For example, if the title of your book is "The History of the United States," then calling it "The Concise History of the United States" would not be accurate, because the book is not actually concise.
* You want to avoid using cliches. The word "concise" is often used to describe the titles of books that are short and to the point, but it can also be seen as a cliché. If you want to avoid using cliches in your writing, then you might want to avoid using the word "concise" to describe the title of your book.
Here are some examples of concise book titles that do not use the word "concise":
* The Great Gatsby by F. Scott Fitzgerald
* To Kill a Mockingbird by Harper Lee
* One Hundred Years of Solitude by Gabriel García Márquez
* The Catcher in the Rye by J.D. Salinger
* The Lord of the Rings by J.R.R. Tolkien