All you need to do is add a word to the word filter and Arctic will start blocking it!
Message cleaning allows Arctic to not only delete messages that contain blocked words but also send a censored version of the message so the conversation in the channel can continue to function without the user having to rewrite their message (this is especially useful when they didn't know a word they used was blocked.)
You can enable message cleaning by using
a?automoderation wordfilter cleanmessages on
🔷 Note: This is a premium feature.