Censure all the bad words in spanish,portuguese,english and the others languages for example, i can help with the Spanish words I think there is an admin / player that speak portuguese and english and can help too
I speak portuguese as my native language and I would gladly help in case this suggestion was accepted, however... To censor bad words on so many languages would require a good amount of work and I honestly think it wouldn't cause a decent impact since bypassing is still very easy to do.
Let's swear in my local language: "Dit me may Dit cha may Con cho nha may" Can most players understand these languages? No. There are more than 100 languages in the world. Filtering these languages will take plenty of work. We can't google translate everything as there are slang swear words that you can't even recognise. Furthermore, guildcraft is an English-based server. Consequently, most players will not recognise the foreign languages. If they swear a lot, they are going to get muted for spamming/flooding. In my opinion, no sorry.
The thing is, like i said, most of the players don't understand such language. Just ignore them. If a moderator knows such language. He can mute that player. We are talking about chat filters.