| Singular | Plural | |
|---|---|---|
| Nominativ | promissum, promisum, promissom | promissa, promissaque |
| Genitiv | promissi, promissinem | promissorum |
| Dativ | promisso, promissoreis | promissis, promissisque |
| Akkusativ | promissum, promisum | promissaque, promissa |
| Ablativ | promissoreis, promisso | promissis, promissisque |
| Vokativ | promissum, promisum | promissaque, promissa |