Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | Pyreneus |
| Gen. | Pyrenei |
| Dat. | Pyreneo |
| Acc. | Pyreneum |
| Abl. | Pyreneo |
| Voc. | Pyrenee |
| PLURIEL |
| Nom. | Pyrenei |
| Gen. | Pyreneōrum |
| Dat. | Pyreneis |
| Acc. | Pyreneos |
| Abl. | Pyreneis |
| Voc. | Pyrenei |
| SINGULIER |
| Nom. | Pyreneă |
| Gen. | Pyreneae |
| Dat. | Pyreneae |
| Acc. | Pyreneam |
| Abl. | Pyreneā |
| Voc. | Pyreneă |
| PLURIEL |
| Nom. | Pyreneae |
| Gen. | Pyreneārum |
| Dat. | Pyreneis |
| Acc. | Pyreneas |
| Abl. | Pyreneis |
| Voc. | Pyreneae |
| SINGULIER |
| Nom. | Pyreneum |
| Gen. | Pyrenei |
| Dat. | Pyreneo |
| Acc. | Pyreneum |
| Abl. | Pyreneo |
| Voc. | Pyreneum |
| PLURIEL |
| Nom. | Pyrenea |
| Gen. | Pyreneōrum |
| Dat. | Pyreneis |
| Acc. | Pyrenea |
| Abl. | Pyreneis | |