| Singular | Plural | |
|---|---|---|
| Nominativ | adadunephros | adadunephri, adadunephroe |
| Genitiv | adadunephri | adadunephrorum, adadunephrum |
| Dativ | adadunephro | adadunephris |
| Akkusativ | adadunephrum, adadunephrom, adadunephron | adadunephros |
| Ablativ | adadunephro | adadunephris |
| Vokativ | adadunephre | adadunephri |