Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | quadrimestris |
| Gen. | quadrimestris |
| Dat. | quadrimestri |
| Acc. | quadrimestrem |
| Abl. | quadrimestri |
| Voc. | quadrimestris |
| PLURIEL |
| Nom. | quadrimestres |
| Gen. | quadrimestrĭum |
| Dat. | quadrimestrĭbus |
| Acc. | quadrimestres |
| Abl. | quadrimestrĭbus |
| Voc. | quadrimestres |
| SINGULIER |
| Nom. | quadrimestris |
| Gen. | quadrimestris |
| Dat. | quadrimestri |
| Acc. | quadrimestrem |
| Abl. | quadrimestri |
| Voc. | quadrimestris |
| PLURIEL |
| Nom. | quadrimestres |
| Gen. | quadrimestrĭum |
| Dat. | quadrimestrĭbus |
| Acc. | quadrimestres |
| Abl. | quadrimestrĭbus |
| Voc. | quadrimestres |
| SINGULIER |
| Nom. | quadrimestre |
| Gen. | quadrimestris |
| Dat. | quadrimestri |
| Acc. | quadrimestre |
| Abl. | quadrimestri |
| Voc. | quadrimestre |
| PLURIEL |
| Nom. | quadrimestrĭa |
| Gen. | quadrimestrĭum |
| Dat. | quadrimestrĭbus |
| Acc. | quadrimestrĭa |
| Abl. | quadrimestrĭbus | |