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