| Singular | Plural | |
|---|---|---|
| Nominativ | concinnum, concinna, concinnus | concinni, concinna, concinnae |
| Genitiv | concinni, concinni, concinnae | — |
| Dativ | concinno, concinnae, concinno | concinnis |
| Akkusativ | concinnum, concinnum, concinnam | concinna, concinnas |
| Ablativ | concinno, concinno, concinna | concinnis |
| Vokativ | concinnum, concinna, concinne | concinni, concinna, concinnae |
| Singular | Plural | |
|---|---|---|
| Nominativ | concinnior, concinnius | concinniores |
| Genitiv | — | — |
| Dativ | — | — |
| Akkusativ | concinnius | concinniores |
| Ablativ | — | — |
| Vokativ | concinnior, concinnius | concinniores |
| Singular | Plural | |
|---|---|---|
| Nominativ | — | — |
| Genitiv | — | — |
| Dativ | — | — |
| Akkusativ | — | — |
| Ablativ | — | — |
| Vokativ | concinnissime | — |