Sangel was a collective name for the many dialects spoken by the Shadowlanders. They were largely spoken in the southern Shadowlands beyond Dandha Presh mountains. They were likely variations of the Shadowlander language spoken in the Northern Shadowlands or Low Taglian.
This was the native tongue of Suvrin, whose name meant "Junior" in Sangel. "Tal" was short for Taglian in Sangel, which also meant "turd".