The centaur language is a gruff, heavy dialect of Reman, with a very deeply integrated element of body language. Eyebrows, lips, ears, hands and head all play a role and can modify or even completely change the meaning of what is being said. This is difficult for outsiders to grasp, and when dealing with non-Centaurs a simplified version is used that ignores the body position aspect and is very similar to High Reman.
The Centaur have no written language. On the rare occasion it needs to be written, usually by non-centaurs, the Reman script is used and body language is not generally recorded.