Rhennee Cant
Though usually ignored in most writings on languages, Rhennee Cant was studied by Revort Leyhar in some detail, using means he does not describe. He did not group it with other Flanaess languages, instead stating that its roots were of unknown origin but that it was a complete language, not a true “cant.” The private language of the Rhennee has great flexibility and has incorporated many terms and phrases from other Flanaess tongues, particularly Old Oeridian and Common, with many specialized terms borrowed from mariners and thieves. Because this language has so few speakers (only the Rhennee) and may come from another world entirely, it is not considered one of the five "true" tongues of eastern Oerik.