Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | Neapolitanus |
| Gen. | Neapolitani |
| Dat. | Neapolitano |
| Acc. | Neapolitanum |
| Abl. | Neapolitano |
| Voc. | Neapolitane |
| PLURIEL |
| Nom. | Neapolitani |
| Gen. | Neapolitanōrum |
| Dat. | Neapolitanis |
| Acc. | Neapolitanos |
| Abl. | Neapolitanis |
| Voc. | Neapolitani |
| SINGULIER |
| Nom. | Neapolitană |
| Gen. | Neapolitanae |
| Dat. | Neapolitanae |
| Acc. | Neapolitanam |
| Abl. | Neapolitanā |
| Voc. | Neapolitană |
| PLURIEL |
| Nom. | Neapolitanae |
| Gen. | Neapolitanārum |
| Dat. | Neapolitanis |
| Acc. | Neapolitanas |
| Abl. | Neapolitanis |
| Voc. | Neapolitanae |
| SINGULIER |
| Nom. | Neapolitanum |
| Gen. | Neapolitani |
| Dat. | Neapolitano |
| Acc. | Neapolitanum |
| Abl. | Neapolitano |
| Voc. | Neapolitanum |
| PLURIEL |
| Nom. | Neapolitana |
| Gen. | Neapolitanōrum |
| Dat. | Neapolitanis |
| Acc. | Neapolitana |
| Abl. | Neapolitanis | |