| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | hirudo | hirudoj |
| Accusative | hirudon | hirudojn |
| Catalan | sangonera |
|---|---|
| Czech | pijavice |
| Dutch | bloedzuiger |
| English | leech |
| French | sangsue |
| German | Egel; Blutegel |
| Latin | hirudo |
| Saterland Frisian | Bloudsuuger |
| Spanish | sanguijuela |
| Swedish | blodigel |