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A brimorak demon; all demons can speak Chthonian.
See also: Languages of the Great Beyond

Some believe that Chthonian, also known as Abyssal, was the first language developed by the inhabitants of the Outer Sphere,1 although this is very difficult to prove given its incredible rate of linguistic change. Chthonian is the native language of the demons of the Outer Rifts, although it is also spoken by many devils, daemons, or others who have frequent dealings with races of the lower realms.2

On Golarion

Chthonian is spoken on Golarion in the Worldwound, a region in northern Avistan with a direct connection to the Outer Rifts that is overrun by demons.3 In Tian Xia, Chthonian is most commonly spoken among the oni and other evil spirits.4 It is also a very useful language when traveling through the drow-controlled5 areas of the Darklands realm of Sekamina, given the dark elves' proclivity for demonic pacts and servants.6


  1. James Jacobs, et al. The Inner Sea World Guide, 251. Paizo Inc., 2011
  2. Erik Mona, et al. “Chapter 5: The World” in Campaign Setting, 220. Paizo Inc., 2008
  3. James Jacobs, et al. The Inner Sea World Guide, 198. Paizo Inc., 2011
  4. James Jacobs, et al. “Life in the Dragon Empires” in Dragon Empires Gazetteer, 49. Paizo Inc., 2011
  5. Paizo retroactively removed drow from the Pathfinder campaign setting as part of the Pathfinder Second Edition Remaster Project. A canon replacement for drow in this context might not exist. See Meta:Drow.
  6. Robert Brookes, et al. “Rules Index” in Heroes of the Darklands, 3. Paizo Inc., 2017