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