AntiKanker simply ensures that the word kanker (dutch for cancer) is blocked by the plugin!!
Many people in Holland swear alot with 'kanker', wich means 'cancer'. When someone uses kanker in his/her chatmessage, there will be an lightning at his current place an he/she will be potioned for 10 seconds with Blindness, Confusion and Wither. (The word kanker is not allowed on this server). Also, if someone uses the K-word, there will be an server broadcast. The plugin comes with some 'standard' variants, but you can add your own (config.yml)
/kkadd word: Add a variant of cancer to the config file.
antikanker.add: Gives access to /kkadd