There are several languages spoken in Vir-Toth, below are the languages of note in Scania.
I include the script that each language uses. Players who know one language are able to identify the other languages that share the same script (even if they will knot understand it). Some scripts are “modified” this indicates that there are some additional characters to the script (think letters like æ or ö are to English). All the languages in Scania use an alphabetic, abugida, or abjad system of writing. In Scania though literacy is fairly low among the normal populations (the exception being West Empire).
Common Languages are those that are spoken by most of the population of Scania (the exceptions being some isolated populations). These are languages used for everyday communications, much like English.
Davish (uses Empire Script and is spoken by Da’Shaar and Da’Hakima)
Deutish (uses Common Script and is spoken in the North Central area of the Thirteen Kingdoms)
Dwarvish (Uses the Runic Script and is spoken in the Dwarf Kingdoms)
Easterner (Uses the Goblin Script spoken by tribes on the Eastern Continent – Gnolls, Ogres, Minotaurs)
Empire (Uses the Empire script and is spoken in the West Empire and the Western Thirteen Kingdoms)
Encorntish (Uses the Common Script and is spoken in the central islands of the Thirteen Kingdoms, it is also a common trade language)
Fre’Deb (Uses the Empire Script and is the primary language of the Desert Tribes)
Goblin (Uses the Goblin Script and is used by the tribes on the Eastern Continent – goblin races)
Grummuish (Uses a modified Ruinic Script and is used by the Free Orcs)
New Draconic (Uses the Modern Script and is spoken by Dragonborn and many New Races, it is also a common trade language)
Portainish (Uses the Common Script and is used in the South-Eastern and South Central area of the Thirteen Kingdoms)
Shampon (Uses the Common Script and is used by those in the Central part of the Thirteen Kingdoms)
Southerling (Uses the Modern Script and is common among Gnomes, Kobolds, and many Kenku but also many Dragonborn)
Thri-Kreen (Used the Empire Script and is used by Thri-Kreen, other races are unable to speak it)
Ut (Uses the Common Script and is used by the Arctic Tribes)
Vvordic (Uses the Common Script and is used by the North-East part of the Thirteen Kingdoms)
Exotic Languages are those languages that are still spoken today, usually by intelligent monsters and beings. They may use it as everyday communication, but these beings will also know a common language. Characters that understand one of these languages should have a background reason for doing so. The exception is Underkant which is the everyday language of the Underdark but is rarely spoken on the surface.
Giant (Uses the Draconic Script and is spoken by Giants)
Infernal (Uses the Infernal Script or a modified / corrupted form of another script and is spoken by Demons, Devils, Evil Gods, and their devout worshippers)
Old Draconic (Uses the Draconic script and is spoken by Dragons, it has no relation to New Draconic)
Outerlands (Uses the Chaos Script and is uses by Aberrants and others from the Far Realm)
Primordial (Uses the Draconic Script and is spoken by Elementals)
Underkant (Uses the Ruinic Script and is spoken by inhabitants of the Underdark)
Ancient or Dead Languages are languages that were spoken by ancient people and are no longer used. These languages are usually known only by script (although some ancient beings may still know how to speak them but only because they were living during those times). Spells and skill that allow you to speak other languages (like tongues) do not work with these languages.
Old Empire (Uses the Old Empire Script and is the ancient language of the Da’Elnaar)
Ancient Draconic (Uses the Ancient Script and is the original Draconic Language that was abandoned by them for reasons they keep to themselves)
Outsider (Uses the Outsider Script and was a language spoken where the New Races came from, there are few speakers of this language)
DM Philosophy on languages: Languages are not there to create puzzles or false walls for the players. Instead they are there to add depth to the world. The D&D rules give plenty of opportunity to get around languages (spells or finding someone to translate).
Note for the players the “common” language that people have been speaking is Vvodic