| Singular | Plural | |
|---|---|---|
| Nominativ | catabasis | catabasis, catabases |
| Genitiv | catabasis | catabasium, catabasum |
| Dativ | catabase, catabasi | catabasibus |
| Akkusativ | catabasim, catabasem | catabaseis, catabasis, catabases |
| Ablativ | catabase, catabasi | catabasibus |
| Vokativ | catabasis | catabases |