| Singular | Plural | |
|---|---|---|
| Nominativ | facunda, facundum, facundus | facundi, facunda, facundiores, facundae |
| Genitiv | facundi, facundiores, facundiores, facundae, facundi | facundorum, facundorum, facundarum |
| Dativ | facundo, facundae, facundo | facundis, facundissimis, facundissimum, facundissimus |
| Akkusativ | facundum, facundum, facundam | facundos, facunda, facundas |
| Ablativ | facundo, facundo, facunda | facundis, facundissimis, facundissimum, facundissimus |
| Vokativ | facunda, facundum, facunde | facundi, facunda, facundiores, facundae |
| Singular | Plural | |
|---|---|---|
| Nominativ | facundior | facundiores |
| Genitiv | — | — |
| Dativ | — | — |
| Akkusativ | — | facundiores |
| Ablativ | — | — |
| Vokativ | facundior | facundiores |
| Singular | Plural | |
|---|---|---|
| Nominativ | facundissimum, facundissimus | — |
| Genitiv | — | — |
| Dativ | — | facundissimis |
| Akkusativ | facundissimum, facundissimum | — |
| Ablativ | — | facundissimis |
| Vokativ | facundissimum | — |