Whilst if is easy to include events by substrings in the option filter_title, filter_location and search e.g. filter_title=”Monday Coffee” there are times you may want to reverse the logic and exclude by substrings.
These three options do allow Regular Expressions ( regex) which is a powerful selection language, complex and esoteric.
However if you want to exclude a string you can follow this process.
Create and expression based on
^(?!The String you want to Exclude).*$ e.g. Morning Coffee so you create
^(?!Monday Coffee).*$ Then you need to 'encode' this to make it safe to use in a shortcode - use the feature here - encode a string
Finally use it in your shortode e.g.