| Singular | Plural | |
|---|---|---|
| Nominativ | euthanasia | euthanasiae |
| Genitiv | euthanasiae, euthanasiai | euthanasiarum, euthanasium |
| Dativ | euthanasiae, euthanasiai | euthanasiis, euthanasiabus |
| Akkusativ | euthanasiam | euthanasias |
| Ablativ | euthanasia, euthanasiad | euthanasiis, euthanasiabus |
| Vokativ | euthanasia | euthanasiae |