Old Speech
From Witcher Wiki
Old Speech is an elven language. As it's one of the oldest languages still in use, it is referred to as the Old Speech. It is mainly used by the elves and dryads, though mages, scientists and the more educated people also know it. The sung version of the Old Speech is used by sirens and nereids. Nilfgaard's language and the Skellige Islands jargon both derived from the Old Speech.
- see also the Old Speech (dictionary)
