| Singular | Plural | |
|---|---|---|
| Nominativ | lecythus, lecythus | lecythi, lecythi |
| Genitiv | lecythi, lecythi | lecythum, lecythum, lecythorum, lecythorum |
| Dativ | lecytho, lecytho | lecythis, lecythis |
| Akkusativ | lecythum, lecythum, lecythom, lecythom | lecythos, lecythos |
| Ablativ | lecytho, lecytho | lecythis, lecythis |
| Vokativ | lecythe, lecythe | lecythi, lecythi |