| Singular | Plural | |
|---|---|---|
| Nominativ | fenusculum, alfenus, quaefenus, quafenus, fenos, fenus | fenora |
| Genitiv | fenoris | fenorium, fenorum |
| Dativ | fenore, fenori | fenoribus |
| Akkusativ | fenus, fenusculum, alfenus, quaefenus, quafenus, fenos | fenora |
| Ablativ | fenore | fenoribus |
| Vokativ | fenusculum, alfenus, quaefenus, quafenus, fenos, fenus | fenora |