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