From Proto-Finnic *virkku, equivalent to virkk- + -u, from the same root as virkeä.
virkku
| Inflection of virkku (Kotus type 1*A/valo, kk-k gradation) | |||
|---|---|---|---|
| nominative | virkku | virkut | |
| genitive | virkun | virkkujen | |
| partitive | virkkua | virkkuja | |
| illative | virkkuun | virkkuihin | |
| singular | plural | ||
| nominative | virkku | virkut | |
| accusative | nom. | virkku | virkut |
| gen. | virkun | ||
| genitive | virkun | virkkujen | |
| partitive | virkkua | virkkuja | |
| inessive | virkussa | virkuissa | |
| elative | virkusta | virkuista | |
| illative | virkkuun | virkkuihin | |
| adessive | virkulla | virkuilla | |
| ablative | virkulta | virkuilta | |
| allative | virkulle | virkuille | |
| essive | virkkuna | virkkuina | |
| translative | virkuksi | virkuiksi | |
| abessive | virkutta | virkuitta | |
| instructive | — | virkuin | |
| comitative | — | virkkuine | |