Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | Phlegraeus |
| Gen. | Phlegraei |
| Dat. | Phlegraeo |
| Acc. | Phlegraeum |
| Abl. | Phlegraeo |
| Voc. | Phlegraee |
| PLURIEL |
| Nom. | Phlegraei |
| Gen. | Phlegraeōrum |
| Dat. | Phlegraeis |
| Acc. | Phlegraeos |
| Abl. | Phlegraeis |
| Voc. | Phlegraei |
| SINGULIER |
| Nom. | Phlegraeă |
| Gen. | Phlegraeae |
| Dat. | Phlegraeae |
| Acc. | Phlegraeam |
| Abl. | Phlegraeā |
| Voc. | Phlegraeă |
| PLURIEL |
| Nom. | Phlegraeae |
| Gen. | Phlegraeārum |
| Dat. | Phlegraeis |
| Acc. | Phlegraeas |
| Abl. | Phlegraeis |
| Voc. | Phlegraeae |
| SINGULIER |
| Nom. | Phlegraeum |
| Gen. | Phlegraei |
| Dat. | Phlegraeo |
| Acc. | Phlegraeum |
| Abl. | Phlegraeo |
| Voc. | Phlegraeum |
| PLURIEL |
| Nom. | Phlegraea |
| Gen. | Phlegraeōrum |
| Dat. | Phlegraeis |
| Acc. | Phlegraea |
| Abl. | Phlegraeis | |