Step (1) − Click on Posts → Categories in WordPress.
Step (2) − You can delete Category1 (Category1 was created in the chapter WordPress – Add Category). When the cursor hovers on the Categories, a few options get displayed below the Category name. Click on the Delete button as shown in the following screen.
When you click on delete, you will get a pop message asking for confirmation to delete the particular category as shown in the following screenshot.
You can click on the OK button and delete the category permanently.