| Singular | Plural | |
|---|---|---|
| Nominativ | parricidium, parricidiumque | parricidia |
| Genitiv | parricidii, paricidii, parricidi | parricidiorum |
| Dativ | parricidio, parricidioque | parricidiis |
| Akkusativ | parricidiumque, parricidium | parricidia |
| Ablativ | parricidio, parricidioque | parricidiis |
| Vokativ | parricidiumque, parricidium | parricidia |