Thieves Cant
From Praemal
Slang used by rogues is remarkably uniform throughout the Tarsisian Empire, thanks to written novels and (once upon a time) heliograph communication. Those same forces also have meant Thieves Cant is often understood by law enforcement officials. Still, some variation of the following can be heard from Freeport to Ptolus to Tarsis to Grail Keep.
See Thieves Cant.
