Greasy Fork is available in English.
Adds a blacklist to Fur Affinity. Also adds the ability to replace typed terms with other terms. If installed correctly you should see a link titled "Edit Blacklist" below the search box on FA's search page.
This bug has now been fixed.
Works like a charm! Absolutely badass extension!
Just a heads up that in v1.0.5, getting 0 search results breaks the next search query (doesn't append the blacklisted tags); tested on Firefox with beta theme