But be careful, it's permanent
Insert or Delete a Worksheet in Microsoft Excel
Anyone who works with Microsoft Excel workbooks will sooner or later have to delete a spreadsheet (also called a worksheet). It may contain too many errors or it may simply be no longer needed. If you find yourself in this situation and are wondering how to delete one or more Excel spreadsheets, this article will explain several ways to do so.
Deleting a spreadsheet from Microsoft Excel is easy and doesn’t require you to be particularly tech-savvy. However, there are multiple ways to do it and whichever one suits you best is your choice. Remember that once you delete a spreadsheet in Excel, you can’t get it back and the data in it will be lost. So be careful about what you delete.
Also check out our guide on how to insert a spreadsheet into a Word document to expand your Excel skills.