| Singular | Plural | |
|---|---|---|
| Nominativ | sponsus, sponsus | sponsi, sponsique, sponsus |
| Genitiv | sponsi, sponsique, sponsus | sponsorum |
| Dativ | sponso, sponsoque, sponsoreis | sponsis |
| Akkusativ | sponsom, sponsum, sponsum | sponsus, sponsos |
| Ablativ | sponso, sponsusve, sponsoque, sponsoreis, sponsu | sponsis |
| Vokativ | sponse, sponsus | sponsus, sponsi, sponsique |