Follow these steps please.
Once you’re on your Home Screen navigate through your library until you find the book you no longer want.Step 2When you select the book it will give you a list of options –select “Remove from Device.” The book will go into your Archive. Files in your Archive are not fully stored on your device, but are there to maintain the record of your purchase.Step 3If you want to remove the book permanently you can do that as well. Sign into the Amazon account you have linked with your Kindle and go to “Manage Your Content and Devices.” You should be looking at a list of your purchases. Find the book you want to delete and click the “…” button on the left side of the title.Step 4From the drop down menu, select “delete.” You will be prompted to confirm whether or not you want to delete the file. Click the yellow “Yes, delete permanently” button to remove the file from your library.RecapThere are two ways to delete books from your Kindle. You can do it right on your device by going to the book you no longer want and selecting “remove from device” or you can permanently delete the book through your Kindle account on the computer.