Old Ghiscari is the language of the ancient Ghiscari Empire. It is a dead language by the time of the War of the Five Kings, but influenced the local variety of Low Valyrian spoken in Slaver's Bay. A few loanwords from Old Ghiscari survive into Slaver's Bay Low Valyrian, such as "mhysa" - the Old Ghiscari word for "mother".
After the Valyrian Freehold conquered the Ghiscari Empire five thousand years ago, the indigenous language of the Ghiscari died out, as the inhabitants of the region were forced to adopt the High Valyrian language of their new masters. After the Doom of Valyria, four hundred years before the War of the Five Kings, the local cities of Slaver's Bay re-asserted their independence, but five thousand years of Valyrian domination had taken a heavy toll. While they pride themselves as being descendants of the old Ghiscari Empire, only a few scraps of its ancient culture survived, and Old Ghiscari remained a dead language.
However, without the central influence of Old Valyria anymore, the old High Valyrian language mutated into various romance languages, differing from region to region, known as Low Valyrian. Some words and features of the old Ghiscari language influenced the new Low Vayrian of Slaver's Bay, making it quite different from the various Low Valyrian languages of the Free Cities.
For example, the word for "mother" in Slaver's Bay Low Valyrian, "mhysa", is a direct loanword from Old Ghiscari, in which "mhysa" also meant "mother".
The language of Slaver's Bay is still fundamentally a form of Low Valyrian, however, and besides a few loanwords and possibly grammatical features, little of Old Ghiscari has survived five millennia after the destruction of the old empire. In the present day, the ruling slave-masters of Slaver's Bay even pride themselves on speaking High Valyrian - once the language of their Valyrian conquerors, but now the preferred language of refined social elites across much of Essos.
Little of Old Ghiscari has survived, save for a few words in Slaver's Bay Low Valyrian which are known to be direct loanwords from the earlier Ghiscari language:
- buzdar ("booz-DAR") - "slave".
- gadbag ("GAHD-bahg") - "slave name".
- mhysa ("MEE-sah") - "mother".
- vrog- ("vrohg-") - "collapse".
In the books
In the books, Daenerys is hailed by the freed slaves as "mother", but using the different words for "mother" in at least five different languages: Mhysa, Maela, Aelalla, Qathei, and Tato. "Mhysa" is the word for "mother" in Old Ghiscari, but the other four languages aren't identified. The TV series simply had the freed slaves call her only "Mhysa" and omitted the other forms.
Linguist David J. Peterson, who invented the Dothraki and Valyrian languages, has directly confirmed that "Old Ghiscari" is a dead language during the time of the TV series. As for how "mhysa" could be a word from "Old Ghiscari" yet still be a word used for "mother" in Slaver's Bay, Peterson explained that it is simply a word from Old Ghiscari which survived into the new Slaver's Bay Low Vayrian after the Ghiscari Empire was destroyed. He compared this to how certain words in modern English are direct loanwords from Celtic, Old English, Latin, etc., even though those are all "dead" languages:
- "This is event is so common as to be completely unremarkable. Old English is a dead language, for example, but we've got plenty of words that were in use them in English. Latin, too. A single, common word? It survives because people remember it and keep using it. You can take a noun from any language and use it another. Think, for example, what would happen if every Japanese-speaking person switched to some other language over night and forgot Japanese. In English, we’d still have the words kimono, sushi, etc. They’re not likely to go away just because the language they came from died."
The local elites in Slaver's Bay hate the old Valyrian Freehold and view them as conquerors, and have tried to re-introduce other elements of the old Ghiscari Empire whenever possible, but so little of the original Ghiscari language survived that they made no attempt to reintroduce it, instead actually continuing to use the language of their hated conquerors. Peterson went on to confirm that so little of the Old Ghiscari language has survived that, even though slaver-masters in present day Astapor and Yunkai try to cling to any cultural scraps from the Old Ghiscari Empire, they have made no attempt to revive Old Ghiscari, and instead slave-masters such as Kraznys mo Nakloz pride themselves on speaking High Valyrian, as the language of all refined social elites across the regions of Essos that the Valyrian Empire used to control (stretching from the Free Cities along the Narrow Sea to Slaver's Bay in the east).
Therefore the inhabitants of Slaver's Bay speak a variant of Low Valyrian which has some local influences from the old Ghiscari language, but this may be compared to how "French" or "Spanish" are both fundamentally Romance languages but developed into separate languages due to the influences of different Germanic invaders (Franks in France, Visigoths in Spain).