| Singular | Plural | |
|---|---|---|
| Nominativ | diatriba | diatribe, diatribae |
| Genitiv | diatribae, diatribai, diatribe | diatribum, diatribarum |
| Dativ | diatribe, diatribae, diatribai | diatribabus, diatribis |
| Akkusativ | diatribam | diatribas |
| Ablativ | diatriba, diatribad | diatribabus, diatribis |
| Vokativ | diatriba | diatribe, diatribae |