| Part of speech | proper name |
|---|---|
| Hyphenation | Stiks·o |
| Nominative | Stikso |
|---|---|
| Accusative | Stikson |
| Afrikaans | Styx |
|---|---|
| Catalan | Estix; Estígia |
| Danish | Styx |
| Dutch | Styx |
| English | Styx |
| French | Styx |
| German | Styx |
| Italian | Stige |
| Latin | Styx |
| Norwegian | Styx |
| Portuguese | Estige |
| Scots | Styx |
| Spanish | Estigia; Estix; Éstige; Estige |
| Thai | สติกซ์ |