Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | quaternus |
| Gen. | quaterni |
| Dat. | quaterno |
| Acc. | quaternum |
| Abl. | quaterno |
| Voc. | quaterne |
| PLURIEL |
| Nom. | quaterni |
| Gen. | quaternōrum, quaternum |
| Dat. | quaternis |
| Acc. | quaternos |
| Abl. | quaternis |
| Voc. | quaterni |
| SINGULIER |
| Nom. | quaternă |
| Gen. | quaternae |
| Dat. | quaternae |
| Acc. | quaternam |
| Abl. | quaternā |
| Voc. | quaternă |
| PLURIEL |
| Nom. | quaternae |
| Gen. | quaternārum, quaternum |
| Dat. | quaternis |
| Acc. | quaternas |
| Abl. | quaternis |
| Voc. | quaternae |
| SINGULIER |
| Nom. | quaternum |
| Gen. | quaterni |
| Dat. | quaterno |
| Acc. | quaternum |
| Abl. | quaterno |
| Voc. | quaternum |
| PLURIEL |
| Nom. | quaterna |
| Gen. | quaternōrum, quaternum |
| Dat. | quaternis |
| Acc. | quaterna |
| Abl. | quaternis | |