There are basically four main languages that are commonly used in the Underworld:

  • Chthonic; spoken by humans and learned by most peoples. Everyone is able to speak it that has a throat, tongue, and mouth.
  • Ticktock; spoken by ticking dead. The language's intricate clicking noises can only be spoken by someone who has mechanical parts.
  • Olde Surfish; spoken by scholars and traditionalists. It is derived from old books and documents, and to "speak" it is to make guesswork of the pronunciation.
  • Erpet; spoken by Sourcerers and worshippers of the World Serpent. Most holy texts and magical formulaes are written in Erpet.