| Singular | Plural | |
|---|---|---|
| Nominativ | supplicium | supplicia |
| Genitiv | supplici, supplicii | suppliciorum, suppliciorumque |
| Dativ | supplicio, supplicioque | suppliciisque, suppliciis |
| Akkusativ | supplicium | supplicia |
| Ablativ | supplicio, supplicioque | suppliciisque, suppliciis |
| Vokativ | supplicium | supplicia |