This plugin allows you to create a list of all the words you want filtered from chat within the config.
It will then check everyone's chat for the words listed in the config and if an unwanted word is found, it is replaced with *'s.
/antiswear add <word> - This adds a word to the filter.
/antiswear remove <word> - This removes a word from the filter.
/antiswear reload - This reloads the filtered words from the config file.
antiswear.* - This node gives people permission to use all the commands.