| Singular | Plural | |
|---|---|---|
| Nominativ | achilles | achilles |
| Genitiv | achillis, achilli, achillides | achillium, achillum |
| Dativ | achillides, achilli, achille | achillibus |
| Akkusativ | achillem, achillen, achilles | achillis |
| Ablativ | achille | achillibus |
| Vokativ | achilles, achille | achilles |