Hide genre in custom search

In the custom search we can select different genres. The only problem with this is that most things are multiple genres. Therefore if I want to view everything but animation guess what I get? Movies that are animations because they are also comedy, action, etc.

Therefore it would be great to be able to exclude a genre — any movie that has that genre regardless of it’s other genres is hidden in the search results.

BTW, anime is a genre that needs to be added — what I would give to be able to hide anime from all lists!!!