in the PONS Dictionary
| Case | Singular | Plural |
|---|---|---|
| Nominative | sīmius | sīmiī |
| Genitive | sīmiī | sīmiōrum |
| Dative | sīmiō | sīmiīs |
| Accusative | sīmium | sīmiōs |
| Ablative | sīmiō | sīmiīs |
| Case | Singular | Plural |
|---|---|---|
| Nominative | sīmia | sīmiae |
| Genitive | sīmiae | sīmiārum |
| Dative | sīmiae | sīmiīs |
| Accusative | sīmiam | sīmiās |
| Ablative | sīmiā | sīmiīs |