| Singular | Plural | |
|---|---|---|
| Nominativ | cavernula | cavernulae |
| Genitiv | cavernulae, cavernulai | cavernularum, cavernulum |
| Dativ | cavernulae, cavernulai | cavernulis, cavernulabus |
| Akkusativ | cavernulam | cavernulas |
| Ablativ | cavernulad, cavernula | cavernulis, cavernulabus |
| Vokativ | cavernula | cavernulae |