| Singularis | Pluralis | |
| Nominativus | ros-a | ros-ae |
| Genetivus | ros-ae | ros-arum |
| Dativus | ros-ae | ros-is |
| Accusativus | ros-am | ros-as |
| Vocativus | ros-a | ros-ae |
| Ablativus | ros-a | ros-is |
Prima declinatio
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Latine loquimur