| Singular | Plural | |
|---|---|---|
| Nominativ | pinnades, pina, pinna | pinnae |
| Genitiv | pinnae, pinnai | pinnarum, pinnum |
| Dativ | pinnae, pinnai | pinnabus, pinnis, pinnisque |
| Akkusativ | pinnam | pinnas, pinnasque |
| Ablativ | pinna, pinnad, pinnades, pina | pinnabus, pinnis, pinnisque |
| Vokativ | pinna, pinnades, pinnicule, pina | pinnae |