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| Language Aerdi | 200 | The most commonly spoken language of the World of Greyhawk. It uses the Oeridian alphabet. The most widespread tongue in the Flanaess. Is still considered the dominant language of the North Kingdom, Ahlissa, the Solnor Compact, the Sea Barons, the Pale, the Urnst states, Ratik, the Iron League (Onnwal, Sunndi, and Irongate), the Lordship of the Isles, the Bandit Kingdoms, and Nyrond | |
| Language Altanian | 200 | | |
| Language Asheeran | 200 | Language of the Asheeran Steppes. | |
| Language Baklunish | 200 | The most commonly spoken language of the World of Greyhawk. It uses the Baklunish alphabet. Many colloquial Baklunish dialects used in Baklunish lands (Ekbir, Ket, the Plains of the Paynims, Tusmit, and Zeif) are based upon Ancient Baklunish, and are collectively called Low Baklunish. | |
| Language Brodignagian | 200 | Language of the giants | |
| Language Canine | 250 | Braking language spoken by intelligent canines such as blink dogs | |
| Language Carpathian | 200 | Language of the lands of far western Putarrha. Used by gypsies who originate from those lands. | |
| Language Centaur | 200 | | |
| Language Cynidicean | 200 | Cynidicean maps to the earthly language of Egyptian. | |
| Language Draconian | 300 | | |
| Language Drow | 200 | | |
| Language Dwarvish | 200 | | |
| Language Elvish | 200 | | |
| Language Enochian | 300 | Language of demons. | |
| Language Ferrond | 200 | The most commonly spoken language of the World of Greyhawk. It uses the Oeridian alphabet. Ferrond is the official language of Veluna, Furyondy, Dyvers, and Verbobonc, which made up most of the former Viceroyalty of Ferrond. | |
| Language Galacian | 200 | Language of Trensai | |
| Language Gathaxian | 200 | Language of Gathax. | |
| Language Giff | 200 | | |
| Language Gith | 250 | Language of Mind Flayers and Gith | |
| Language Gnomish | 200 | | |
| Language Gorillyan | 250 | Language of Blithwic Gorillas. | |
| Language Halfling | 200 | | |
| Language Japanese | 200 | Language of The Japans. | |
| Language Jirdunian | 200 | Language of the Spelljammer ancients. | |
| Language Keo Ti Shou | 200 | The most commonly spoken language of the World of Greyhawk. It uses the Shou Ciang alphabet. Also known as "Shou". This is the common tongue of the Celestial Imperium. Many local dialects exist. | |
| Language Keoish | 200 | The most commonly spoken language of the World of Greyhawk. It uses the Oeridian alphabet. Also called "Keolandish," Keoish is the primary language of the Sheldomar Valley, reaching up into Bissel. | |
| Language Lizardman | 200 | | |
| Language Mandarin | 200 | Language of Cathay. | |
| Language Naga | 200 | This language maps to the earthly language of Sanskrit. | |
| Language Nynorsk | 200 | Language of the Wolf and Bear Barbarians. | |
| Language Ogrish | 200 | | |
| Language Orcish | 200 | | |
| Language Passel Tongue | 200 | | |
| Language Prussian | 200 | Language of Prussia | |
| Language Putarrhan | 200 | Language of much of the City States and other areas of Putarrha. Also called the Common Tongue. | |
| Language Symbayan | 200 | Language of the "civilized" tribes of the vast Yrmen Desert. | |
| Language Thieves Cant | 150 | | |
| Language Thunish | 200 | Language of the nomadic tribes of the vast Yrmen Desert. | |
| Language Undercommon | 200 | This is the common language of the underworld. | |
| Language Uralic | 200 | Language of the Sea of Falling Stars | |
| Language Venetian | 200 | Language of the Venetian City States. | |
| Language Viridian | 200 | | |
| Language Wenzhounese | 300 | Language of devils. | |
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