In WordPress, “deprecated” refers to a feature or function that has been identified for removal in future versions of the software.
A deprecated feature or function may still work in the current version of WordPress, but it is no longer recommended to use it because it may be removed in a future version, causing problems or errors on websites that rely on it.
When a feature or function is marked as deprecated in WordPress, developers are encouraged to find an alternative solution or upgrade to a newer version that uses a different method.
Plugin and theme developers are also encouraged to update their products to remove deprecated features or functions and replace them with newer, more stable alternatives. This helps ensure that WordPress continues to run smoothly and securely for all users.