From Middle Low German rune (“gelding”), or possibly from archaic Swedish rune (“gelding”).
ruun (genitive ruuna, partitive ruuna)
| Declension of ruun (ÕS type 22i/külm, length gradation) | |||
|---|---|---|---|
| singular | plural | ||
| nominative | ruun | ruunad | |
| accusative | nom. | ||
| gen. | ruuna | ||
| genitive | ruunade | ||
| partitive | ruuna | ruuni ruunasid | |
| illative | ruuna ruunasse |
ruunadesse ruunisse | |
| inessive | ruunas | ruunades ruunis | |
| elative | ruunast | ruunadest ruunist | |
| allative | ruunale | ruunadele ruunile | |
| adessive | ruunal | ruunadel ruunil | |
| ablative | ruunalt | ruunadelt ruunilt | |
| translative | ruunaks | ruunadeks ruuniks | |
| terminative | ruunani | ruunadeni | |
| essive | ruunana | ruunadena | |
| abessive | ruunata | ruunadeta | |
| comitative | ruunaga | ruunadega | |
Ultimately from Proto-Germanic *rūnō.
ruun (genitive ruuni, partitive ruuni)
| Declension of ruun (ÕS type 22e/riik, length gradation) | |||
|---|---|---|---|
| singular | plural | ||
| nominative | ruun | ruunid | |
| accusative | nom. | ||
| gen. | ruuni | ||
| genitive | ruunide | ||
| partitive | ruuni | ruune ruunisid | |
| illative | ruuni ruunisse |
ruunidesse ruunesse | |
| inessive | ruunis | ruunides ruunes | |
| elative | ruunist | ruunidest ruunest | |
| allative | ruunile | ruunidele ruunele | |
| adessive | ruunil | ruunidel ruunel | |
| ablative | ruunilt | ruunidelt ruunelt | |
| translative | ruuniks | ruunideks ruuneks | |
| terminative | ruunini | ruunideni | |
| essive | ruunina | ruunidena | |
| abessive | ruunita | ruunideta | |
| comitative | ruuniga | ruunidega | |