| Singular | Plural | |
|---|---|---|
| Nominativ | decatressis | decatressis, decatresses |
| Genitiv | decatressis | decatressium, decatressum |
| Dativ | decatressi, decatresse | decatressibus |
| Akkusativ | decatressim, decatressem | decatresseis, decatressis, decatresses |
| Ablativ | decatressi, decatresse | decatressibus |
| Vokativ | decatressis | decatresses |