| Abyssal | Language | - | Demontongue - the language of the Abyss | ||||
| Dwarvish | Language | - | Language of the Dwarves | ||||
| Elvish | Language | - | Language of the Elven peoples | ||||
| Fae Mhor (language) | Language | - | Language of the Fae Mhor and lingua franca of the Underdark | ||||
| Helltongue | Language | - | Infernal; the language of the Nine Hells | ||||
| High Erlyid | Language | - | Formal language of the Erlyid | ||||
| Krultac | Language | - | Language of lizardmen and dragons | ||||
| Low Erlyid - "Common" | Language | - | Simplified form of High Erlyid commonly spoken in Southern Alair | ||||
| Norton | Language | - | Common tongue of the north of Alair | ||||
| Orcish | Language | - | Language of orcs and goblins | ||||
| Planewalker Cant | Language | - | The slang of the inhabitants of Sigil | ||||
| Ronkainen | Language | - | Language of the Panserbørnë armoured bears of the far north | ||||
| Selasht | Language | - | Language of the lost realm of Khabra | ||||
| Thalrath | Language | - | Language of the Red Dust Tract |