| Part of speech | unknown part of speech |
|---|
| Nominative | Silezio |
|---|---|
| Accusative | Silezion |
| Czech | Slezsko |
|---|---|
| Dutch | Silezië |
| English | Silesia |
| Faeroese | Slesia |
| French | Silésie |
| German | Schlesien |
| Greek | Σιλεσία |
| Hungarian | Szilézia |
| Polish | ?ląsk; Śląsk |
| Russian | Силезия |
| Saterland Frisian | Silesien |