Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | trientalis |
| Gen. | trientalis |
| Dat. | trientali |
| Acc. | trientalem |
| Abl. | trientali |
| Voc. | trientalis |
| PLURIEL |
| Nom. | trientales |
| Gen. | trientalĭum |
| Dat. | trientalĭbus |
| Acc. | trientales |
| Abl. | trientalĭbus |
| Voc. | trientales |
| SINGULIER |
| Nom. | trientalis |
| Gen. | trientalis |
| Dat. | trientali |
| Acc. | trientalem |
| Abl. | trientali |
| Voc. | trientalis |
| PLURIEL |
| Nom. | trientales |
| Gen. | trientalĭum |
| Dat. | trientalĭbus |
| Acc. | trientales |
| Abl. | trientalĭbus |
| Voc. | trientales |
| SINGULIER |
| Nom. | trientale |
| Gen. | trientalis |
| Dat. | trientali |
| Acc. | trientale |
| Abl. | trientali |
| Voc. | trientale |
| PLURIEL |
| Nom. | trientalĭa |
| Gen. | trientalĭum |
| Dat. | trientalĭbus |
| Acc. | trientalĭa |
| Abl. | trientalĭbus | |