| Singular | Plural | |
|---|---|---|
| Nominativ | inbecillum, inbecillaque, inbecillus, inbecilla | inbecilli, inbecillae, inbecillaque, inbecilla |
| Genitiv | inbecilli, inbecillae, inbecilli | — |
| Dativ | inbecilloque, inbecilloque, inbecillae, inbecillo, inbecillo | inbecillis |
| Akkusativ | inbecillam, inbecillum, inbecillum | inbecilla, inbecillos, inbecillaque, inbecillas |
| Ablativ | inbecilloque, inbecilloque, inbecillaque, inbecilla, inbecillo, inbecillo | inbecillis |
| Vokativ | inbecillum, inbecillaque, inbecilla, inbecille | inbecilli, inbecillae, inbecillaque, inbecilla |
| Singular | Plural | |
|---|---|---|
| Nominativ | inbecillior | inbecilliora, inbecilliores |
| Genitiv | inbecillioris, inbecillioris | — |
| Dativ | inbecilliori | inbecillioribus |
| Akkusativ | inbecilliorem | inbecilliora, inbecilliores |
| Ablativ | inbecilliori | inbecillioribus |
| Vokativ | inbecillior | inbecilliora, inbecilliores |
| Singular | Plural | |
|---|---|---|
| Nominativ | inbecillissima | inbecillissima |
| Genitiv | — | — |
| Dativ | — | inbecillissimis |
| Akkusativ | — | inbecillissima |
| Ablativ | inbecillissima | inbecillissimis |
| Vokativ | inbecillissima | inbecillissima |
| Grundform | |
|---|---|
| Positiv | inbecille |
| Komparativ | — |
| Superlativ | — |